The Sr20/Sr22vet thread - Page 24 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

RalliartRsX · 05-22-2017, 09:21 PM

Quote:

Originally Posted by LuckyX2

Just keep in mind the N1s have a lot of overlap which becomes a problem with large backpressure and a 2.2 is going to generate more backpressure than a 2.0 assuming everything else is the same. I'm actually concerned a bit that the N1s are going to limit me when I shoot for 30psi. I may adjust the cams to reduce the overlap a bit.

WHat did Coheed produce on his 6266 fwd sentra with N1?? From what I saw, they worked very well for high boost/high back pressure situations.

The only other option is...............Kelford @ $1000...............and not a whole lot of sets of 184C come up for sale much less 184Ts. And even they did, they would be $800 lol

RZRSHARP_240SX · 05-22-2017, 08:05 PM

Boost started around 2800 rpm. This is a p11 head. We haven't start the cam timing yet since we just want to wait till I put in the high boost actuator. I don't have the dyno chart yet since we are still not done tuning.

LuckyX2 · 05-23-2017, 06:30 AM

6266 is a larger turbo than the 7163 with a turbine that has a greater swallowing capacity which means less backpressure. Also his "high boost" was only 19psi. There's gonna be a lot more backpressure at 25-30psi.

His pressure ratio (exhaust:intake) was probably close to 1:1 where the N1s operate well since that is basically the ratio of an NA car with a good flowing exhaust. Meanwhile a 7163 at 25psi/8k+ is probably going to be a ratio of 1.5:1, maybe even 2:1 on a 2.2L.

I guess we'll find out if the N1s hold it back when I eventually get back to the dyno. My guess is the P12 cams will make the most power up top with a 7163 at 25psi+ while the N1s will make the most midrange. At ~20psi I'd guess the N1s are the best all over. I need midrange for autox and probably will only run 20-25psi when I compete anyway, so I went for the N1s.

TLDR; Once you hit the point where the backpressure overcomes the momentum of the exhaust and you see reversion, the P12s should make more power than the N1s due to less overlap.

Will. · 05-26-2017, 02:58 PM

Hey Guys,

I'll be travelling from Australia to the US next week for EDC LV and staying around SF & LA the first two weeks. I'm also about to start my VE build and i was wondering if it was easy to obtain VE parts from Supertech or Mazworx, how long would it take to get parts shipped over to my hotel?

japslapsilvia · 05-26-2017, 03:06 PM

Quote:

Originally Posted by hanzbrady

Hey guys, I have multiple sets of Kelford VE cams on the shelf ready to ship, call or email and mention Zilvia and I'll knock 5% off your order!

Quote:

Originally Posted by Will.

Hey Guys,

I'll be travelling from Australia to the US next week for EDC LV and staying around SF & LA the first two weeks. I'm also about to start my VE build and i was wondering if it was easy to obtain VE parts from Supertech or Mazworx, how long would it take to get parts shipped over to my hotel?

send a PM to Hanz

hanzbrady · 05-26-2017, 03:52 PM

Quote:

Originally Posted by Will.

Hey Guys,

I'll be travelling from Australia to the US next week for EDC LV and staying around SF & LA the first two weeks. I'm also about to start my VE build and i was wondering if it was easy to obtain VE parts from Supertech or Mazworx, how long would it take to get parts shipped over to my hotel?

It depends heavily on what you're in need of. We have a lot of stuff on the shelf but if it's time sensitive always shoot us an email to confirm availability

bardabe · 05-26-2017, 04:11 PM

Quote:

Originally Posted by Will.

Hey Guys,

I'll be travelling from Australia to the US next week for EDC LV and staying around SF & LA the first two weeks. I'm also about to start my VE build and i was wondering if it was easy to obtain VE parts from Supertech or Mazworx, how long would it take to get parts shipped over to my hotel?

I regularly stock Supertech & can get you the stuff you need no problem. PM sent!

RalliartRsX · 05-23-2017, 06:56 AM

So the one thing was the massive amounts of overlap of the n1 vs p12. Something like double the amount so we will see.

So far VET cams should (on paper) be the hot ticket if this is the case (low overlap) but real world testing has somewhat shown otherwise

However as yourself, I am looking for midrange and his low boost numbers would align more with what I intend to run on the VET/7163 hence why I'm going with the N1. At 20psi or so the back pressure shouldn't be more than 1.1-1.2 or so :1

In all honesty, I expect the VET cams to perform better for my 20-25psi/7163/stock unported/3 angle valve job head to perform the best for my goals.

speedingmofa · 05-23-2017, 07:11 AM

Awhile back people have been wondering how the stock sr20ve plenum can be flipped and welded... Well, i finally found someone who's done it:

No, it won't any beauty contests, but it seems to work and is making almost 500hp.
I thought the ports lined up like shit, but it seems to work for him!

About the cams, can someone break down what are the pros/cons (strength low/mid/top range) of each OEM cam (20ve, 16ve, N1, 20V and 20VET)?
I found this info awhile ago by Coheed, not sure if anyone's verified his claims:

"I've had good luck with the SR20VET cams. They have a strong powerband that starts to level out around 6500rpm or so, and holds pretty flat to redline. I made 440whp on 24psi with a log manifold and VET cams.

If you are running a log, don't use the stock cams. VET cams are your friend.

If you are tubular and want power under 8500rpm, look at SR20VE cams.

If you are tubular and want power up to 9500rpm or so, pick SR16VE cams.

Use N1 cams for crazy builds utilizing GT4294R+ turbos and 10,000rpm+ powerbands.

The 20V cams I would expect to fall in somewhere in the SR16VE area, and be good for top end power. But I would expect them to make a lot more mid-range than the SR16VE cams."

600supersport · 05-23-2017, 12:37 PM

Anyone actually shared EBP logs on these relatively similar setups before or are we just guessing off someone's log manifold and god knows what else?

Most now have a free flowing, 3" or bigger exhaust (probably catless), .73ar or bigger turbine housing and tubular manifold. Would this still be THAT much EBP on roughly a 35R sized turbine wheel or am I just wrong too?

RalliartRsX · 05-23-2017, 01:00 PM

Quote:

Originally Posted by 600supersport

Anyone actually shared EBP logs on these relatively similar setups before or are we just guessing off someone's log manifold and god knows what else?

Most now have a free flowing, 3" or bigger exhaust (probably catless), .73ar or bigger turbine housing and tubular manifold. Would this still be THAT much EBP on roughly a 35R sized turbine wheel or am I just wrong too?

Go ask BW (seriously). They have a the matchbot which has a majority of this already recorded

LuckyX2 · 05-23-2017, 03:08 PM

Matchbot calculates about 40psi of backpressure at ~8k for my SR20VE with a 7163 FYI.

hanzbrady · 05-26-2017, 06:06 AM

Hey guys, I have multiple sets of Kelford VE cams on the shelf ready to ship, call or email and mention Zilvia and I'll knock 5% off your order!

Will. · 05-26-2017, 04:13 PM

Thanks mate, i will send a PM.

I'm looking to build my P11 Head for my S15,

aimming for 370kw/500HP, responsive~ planning to run a EFR turbo. It will be a dd car and also occasional track days/time attack circuit.

Just seeing what parts would suit the build. I will also plan on building the bottom end aswell.

livelovesole · 05-26-2017, 04:24 PM

If you run an ATI Damper, do you still have to machine off 5mm?

bardabe · 05-26-2017, 04:28 PM

Quote:

Originally Posted by Will.

Thanks mate, i will send a PM.

I'm looking to build my P11 Head for my S15,

aimming for 370kw/500HP, responsive~ planning to run a EFR turbo. It will be a dd car and also occasional track days/time attack circuit.

Just seeing what parts would suit the build. I will also plan on building the bottom end aswell.

sounds good looking forward to doing business with you mate!

Quote:

Originally Posted by livelovesole

If you run an ATI Damper, do you still have to machine off 5mm?

yes you do.

Will. · 06-01-2017, 08:42 AM

My P11 head I just picked up, the previous owner ended up going RB26 on their S15, I got the head for cheap, its been acid washed and all the standard parts including cams were given to me in a separate box, Also got given a cool SR16VE rocker cover.

Going to be flying into San Fran from Sydney tomorrow morning for my holiday so it'll be delaying my build but I get to explore the USA

RalliartRsX · 06-01-2017, 09:00 AM

Luckily the head is very easy to put back together

However, I sure hope the prior owner properly labeled all the shims and locations......

jr_ss · 06-01-2017, 10:42 AM

Quote:

Originally Posted by RalliartRsX

Luckily the head is very easy to put back together

However, I sure hope the prior owner properly labeled all the shims and locations......

If it's taken down that far, he'd have to go back through and redo all the shims anyway.

RalliartRsX · 06-01-2017, 10:47 AM

Quote:

Originally Posted by jr_ss

If it's taken down that far, he'd have to go back through and redo all the shims anyway.

True. I should be more specific

I sure hope he labeled the entire valve train and corresponding location.

When I bagged and tagged the head items, a diagram was drawn up for engine location and every item was bagged and tagged and will be returning to exactly where it was removed from

bardabe · 06-02-2017, 02:08 AM

Hey guys am I the only one that thinks this thread belongs in the tech section by now?

jr_ss · 06-02-2017, 10:04 AM

It's a discussion thread, not really a tech thread. I do think it needs to be stickied though.

1gr8bar10der · 06-06-2017, 12:46 AM

Quote:

Originally Posted by jr_ss

It's a discussion thread, not really a tech thread. I do think it needs to be stickied though.

I second this. This thread is getting more and more legit.

Will. · 06-04-2017, 09:01 AM

Everything's been tagged but I rather replace all them all with brand new components

Sent from my iPhone using Tapatalk

hanzbrady · 06-06-2017, 12:48 PM

Hey guys we need someone with a VVL swap in an schassis preferably an S14 to come by and help with some product development. We have a new product that we need to test firewall clearance for.

jr_ss · 06-07-2017, 10:39 AM

Quote:

Originally Posted by hanzbrady

Hey guys we need someone with a VVL swap in an schassis preferably an S14 to come by and help with some product development. We have a new product that we need to test firewall clearance for.

I have one, I'm 2+hrs southwest of yous. I wouldn't be able to get the car up there during the week days, but possibly on a Sat. Pm me and maybe we can work something out.

Hyaboosta · 06-07-2017, 09:58 PM

Is anyone running aem series 2? I was curious if the units that are designed for the sr20 have any issues controlling the vvl engagement.

hanzbrady · 06-08-2017, 06:01 AM

Quote:

Originally Posted by Hyaboosta

Is anyone running aem series 2? I was curious if the units that are designed for the sr20 have any issues controlling the vvl engagement.

It can control VVL.

s13silvia123 · 06-12-2017, 02:00 PM

someone spilled the beans well not really, anyways, anyone used Porsche Cayenne coils. i head they pack a punch when used on KA-ts.

RalliartRsX · 06-13-2017, 09:45 AM

Quote:

Originally Posted by s13silvia123

someone spilled the beans well not really, anyways, anyone used Porsche Cayenne coils. i head they pack a punch when used on KA-ts.

Why not just use Gixxer 750/1000 coils? They are less than 50 shipped for a set off ebay and are similar to the AEM pencil coils.

05-23-2017, 06:30 AM	#3
LuckyX2 Zilvia Addict Join Date: Jul 2011 Location: Philadelphia Age: 33 Posts: 850 Trader Rating: (7) Feedback Score: 7 reviews	6266 is a larger turbo than the 7163 with a turbine that has a greater swallowing capacity which means less backpressure. Also his "high boost" was only 19psi. There's gonna be a lot more backpressure at 25-30psi. His pressure ratio (exhaust:intake) was probably close to 1:1 where the N1s operate well since that is basically the ratio of an NA car with a good flowing exhaust. Meanwhile a 7163 at 25psi/8k+ is probably going to be a ratio of 1.5:1, maybe even 2:1 on a 2.2L. I guess we'll find out if the N1s hold it back when I eventually get back to the dyno. My guess is the P12 cams will make the most power up top with a 7163 at 25psi+ while the N1s will make the most midrange. At ~20psi I'd guess the N1s are the best all over. I need midrange for autox and probably will only run 20-25psi when I compete anyway, so I went for the N1s. TLDR; Once you hit the point where the backpressure overcomes the momentum of the exhaust and you see reversion, the P12s should make more power than the N1s due to less overlap. __________________ My S13 SR Street Mod Build

05-26-2017, 02:58 PM	#4
Will. Leaky Injector Join Date: Sep 2012 Location: Australia Posts: 67 Trader Rating: (0) Feedback Score: 0 reviews	Hey Guys, I'll be travelling from Australia to the US next week for EDC LV and staying around SF & LA the first two weeks. I'm also about to start my VE build and i was wondering if it was easy to obtain VE parts from Supertech or Mazworx, how long would it take to get parts shipped over to my hotel? __________________ Instagram: willssilvia

05-23-2017, 07:11 AM	#9
speedingmofa Zilvia Member Join Date: Nov 2012 Location: Rotterdam, the Netherlands Posts: 290 Trader Rating: (15) Feedback Score: 15 reviews	Awhile back people have been wondering how the stock sr20ve plenum can be flipped and welded... Well, i finally found someone who's done it: No, it won't any beauty contests, but it seems to work and is making almost 500hp. I thought the ports lined up like shit, but it seems to work for him! About the cams, can someone break down what are the pros/cons (strength low/mid/top range) of each OEM cam (20ve, 16ve, N1, 20V and 20VET)? I found this info awhile ago by Coheed, not sure if anyone's verified his claims: "I've had good luck with the SR20VET cams. They have a strong powerband that starts to level out around 6500rpm or so, and holds pretty flat to redline. I made 440whp on 24psi with a log manifold and VET cams. If you are running a log, don't use the stock cams. VET cams are your friend. If you are tubular and want power under 8500rpm, look at SR20VE cams. If you are tubular and want power up to 9500rpm or so, pick SR16VE cams. Use N1 cams for crazy builds utilizing GT4294R+ turbos and 10,000rpm+ powerbands. The 20V cams I would expect to fall in somewhere in the SR16VE area, and be good for top end power. But I would expect them to make a lot more mid-range than the SR16VE cams." __________________ Need UKDM/EUDM/JDM/RHD Nissan parts? Hit me up Insta: skids14

05-23-2017, 12:37 PM	#10
600supersport Zilvia Junkie Join Date: Aug 2010 Location: buffalo, ny Posts: 348 Trader Rating: (10) Feedback Score: 10 reviews	The Sr20/Sr22vet thread Anyone actually shared EBP logs on these relatively similar setups before or are we just guessing off someone's log manifold and god knows what else? Most now have a free flowing, 3" or bigger exhaust (probably catless), .73ar or bigger turbine housing and tubular manifold. Would this still be THAT much EBP on roughly a 35R sized turbine wheel or am I just wrong too?

05-23-2017, 03:08 PM	#12
LuckyX2 Zilvia Addict Join Date: Jul 2011 Location: Philadelphia Age: 33 Posts: 850 Trader Rating: (7) Feedback Score: 7 reviews	Matchbot calculates about 40psi of backpressure at ~8k for my SR20VE with a 7163 FYI. __________________ My S13 SR Street Mod Build

05-22-2017, 08:05 PM	#2
RZRSHARP_240SX Leaky Injector Join Date: Mar 2008 Location: Calgary Age: 34 Posts: 64 Trader Rating: (0) Feedback Score: 0 reviews	Boost started around 2800 rpm. This is a p11 head. We haven't start the cam timing yet since we just want to wait till I put in the high boost actuator. I don't have the dyno chart yet since we are still not done tuning.

05-23-2017, 06:56 AM	#8
RalliartRsX Post Whore! Join Date: Apr 2006 Location: Maryland Posts: 4,791 Trader Rating: (32) Feedback Score: 32 reviews	So the one thing was the massive amounts of overlap of the n1 vs p12. Something like double the amount so we will see. So far VET cams should (on paper) be the hot ticket if this is the case (low overlap) but real world testing has somewhat shown otherwise However as yourself, I am looking for midrange and his low boost numbers would align more with what I intend to run on the VET/7163 hence why I'm going with the N1. At 20psi or so the back pressure shouldn't be more than 1.1-1.2 or so :1 In all honesty, I expect the VET cams to perform better for my 20-25psi/7163/stock unported/3 angle valve job head to perform the best for my goals.

05-26-2017, 06:06 AM	#13
hanzbrady Zilvia FREAK! Join Date: Apr 2015 Location: Floriduh Posts: 1,166 Trader Rating: (4) Feedback Score: 4 reviews	Hey guys, I have multiple sets of Kelford VE cams on the shelf ready to ship, call or email and mention Zilvia and I'll knock 5% off your order! __________________ [email protected]

05-26-2017, 04:13 PM	#14
Will. Leaky Injector Join Date: Sep 2012 Location: Australia Posts: 67 Trader Rating: (0) Feedback Score: 0 reviews	Thanks mate, i will send a PM. I'm looking to build my P11 Head for my S15, aimming for 370kw/500HP, responsive~ planning to run a EFR turbo. It will be a dd car and also occasional track days/time attack circuit. Just seeing what parts would suit the build. I will also plan on building the bottom end aswell. __________________ Instagram: willssilvia

05-26-2017, 04:24 PM	#15
livelovesole Zilvia Member Join Date: Apr 2013 Location: Long Island, NY Age: 32 Posts: 216 Trader Rating: (5) Feedback Score: 5 reviews	If you run an ATI Damper, do you still have to machine off 5mm?

06-01-2017, 08:42 AM	#17
Will. Leaky Injector Join Date: Sep 2012 Location: Australia Posts: 67 Trader Rating: (0) Feedback Score: 0 reviews	My P11 head I just picked up, the previous owner ended up going RB26 on their S15, I got the head for cheap, its been acid washed and all the standard parts including cams were given to me in a separate box, Also got given a cool SR16VE rocker cover. Going to be flying into San Fran from Sydney tomorrow morning for my holiday so it'll be delaying my build but I get to explore the USA __________________ Instagram: willssilvia

06-01-2017, 09:00 AM	#18
RalliartRsX Post Whore! Join Date: Apr 2006 Location: Maryland Posts: 4,791 Trader Rating: (32) Feedback Score: 32 reviews	Luckily the head is very easy to put back together However, I sure hope the prior owner properly labeled all the shims and locations......

06-02-2017, 02:08 AM	#21
bardabe Post Whore! Join Date: Aug 2005 Location: SoCal Age: 34 Posts: 4,719 Trader Rating: (10) Rides Gallery: bardabe Feedback Score: 10 reviews	Hey guys am I the only one that thinks this thread belongs in the tech section by now? __________________ Review Thread

06-02-2017, 10:04 AM	#22
jr_ss Post Whore! Join Date: Dec 2005 Location: Pa Posts: 6,413 Trader Rating: (35) Feedback Score: 35 reviews	It's a discussion thread, not really a tech thread. I do think it needs to be stickied though. __________________ My SR20VET Does your VTC gear rattle in your S14/15 SR? PM me.

06-04-2017, 09:01 AM	#24
Will. Leaky Injector Join Date: Sep 2012 Location: Australia Posts: 67 Trader Rating: (0) Feedback Score: 0 reviews	Everything's been tagged but I rather replace all them all with brand new components Sent from my iPhone using Tapatalk __________________ Instagram: willssilvia

06-06-2017, 12:48 PM	#25
hanzbrady Zilvia FREAK! Join Date: Apr 2015 Location: Floriduh Posts: 1,166 Trader Rating: (4) Feedback Score: 4 reviews	Hey guys we need someone with a VVL swap in an schassis preferably an S14 to come by and help with some product development. We have a new product that we need to test firewall clearance for. __________________ [email protected]

06-07-2017, 09:58 PM	#27
Hyaboosta Join Date: Apr 2017 Location: Miami,FL Posts: 16 Trader Rating: (0) Feedback Score: 0 reviews	Is anyone running aem series 2? I was curious if the units that are designed for the sr20 have any issues controlling the vvl engagement.

06-12-2017, 02:00 PM	#29
s13silvia123 Post Whore! Join Date: May 2006 Location: where waldo is Age: 42 Posts: 3,266 Trader Rating: (16) Feedback Score: 16 reviews	someone spilled the beans well not really, anyways, anyone used Porsche Cayenne coils. i head they pack a punch when used on KA-ts. __________________ 18g and 20g turbo users click on me http://zilvia.net/f/tech-talk/261219-18g-20g-turbo-users.html