Calling all SR Gurus, strange pulley issue. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

R3b · 04-13-2018, 07:14 PM

To make a long story short talked my buddy into picking up a "backyard" zenki with a built SR20vet, engine is solid but wiring wise the car is a mess. Had regular female clips to the VVL solenoid, mess of intercooler couplers, no eccs relay giving the ecu 12v, fan running 24/7 off ignition, tac jumps around like crazy or never reads, no speedo, shitty gauges, leaking a bit of oil by pan (which we fixed and did front/rear seal) etc

Basically got it non running, turns out its the tune and put it back to "stock". Z32 maf with 370ccs on regular chipped ecu so now the issue is this. There is a crazy belt wine and further investigating looks like closest pulley to the block for the water pump and alt are all sorts of off....

Looks like the crank sits way too forward and when taking off the water pump pulley there were stacks of washers behind it. Now im coming from knowledge from building kas but does mix matching pulleys between s13/s14 cause so much of a gap? When I look up pictures online of sr20 crank pulley the timing pin is right on the edge of the pulley, on this motor which is a s13 harness inside an s14 not sure if s13 bottom block or s14 since the head is VVL.

I think this pulley is from an s14 since I was reading that 3 rows is s14 and 4 rows is s13 for powersteering belts but when I looked up "lightweight" pulley all listing for sale online say for s13-s15 or just sr20 no matter year or chassis.

I took off the crank pulley thinking it was the key but it checked out fine, retorqued it and landed up in the same spot. The gap between the crank pulley and timing mark is about the same distance thats off between the other pulleys.

So not sure if I need to order the correct crank pulley for bottom end of the block(all sr20 share the same crank itself afaik) get different set of "light weight pulley" or something is up with the front cover stopping the crank from sitting closer to the block.

My buddies pulley

What i've seen online

Kingtal0n · 04-14-2018, 12:18 AM

Jesus, (&#@#(&*$ I've never heard of such shenanigans.

Err if you dont know what you have, or can't tell,

I recommend getting a complete accessory setup from a good running proper engine and swapping it over. Spacers under the water pump? Sounds like a nightmare for a setup which could be so simple and reliable.

If not, you might have a FWD crank pulley or something. might wwant to start there
edit: missed the VE part. thats a whole additional ball of wax you really didn't need or want, sorry.

Yellow4g63 · 04-14-2018, 12:32 AM

If it's done right that would be a SR20VE front cover. And the timing mark won't line up. https://www.efisolutions.com.au/timi...-sr20ve-sr16ve

hanzbrady · 04-14-2018, 07:45 AM

If that's a RWD pulley and a VE oil pump get the back of the pulley machined and buy these parts,

http://www.mazworx.com/store/p/353-R...g-Pointer.aspx

http://www.mazworx.com/store/p/266-M...ar-Spacer.aspx

jr_ss · 04-14-2018, 07:54 PM

Agree with Hanz. Pulley needs to be machined and the timing pin relocator installed. You cannot time the motor without it.

R3b · 04-14-2018, 08:13 PM

Quote:

Originally Posted by Kingtal0n

Jesus, (&#@#(&*$ I've never heard of such shenanigans.

Err if you dont know what you have, or can't tell,

I recommend getting a complete accessory setup from a good running proper engine and swapping it over. Spacers under the water pump? Sounds like a nightmare for a setup which could be so simple and reliable.

If not, you might have a FWD crank pulley or something. might wwant to start there
edit: missed the VE part. thats a whole additional ball of wax you really didn't need or want, sorry.

Yeah it needs major TLC but hey! If you want to take a crack at tuning it your more than welcome. I still hear nothing but good things from the locals in sfl about your tunes. I might need one as well for my built ka-t, I emailed you way long ago about this lean issue, eventually figured it out to being shitty injectors, went top feed 1050x by ID and have been daily driving the car almost a year.

Quote:

Originally Posted by Yellow4g63

If it's done right that would be a SR20VE front cover. And the timing mark won't line up. https://www.efisolutions.com.au/timi...-sr20ve-sr16ve

The word right in this car doesnt add up... but this seems like the case and the last owner used a colar spacer. I'll check tomorrow if its VE front or DE cover.

Quote:

Originally Posted by hanzbrady

If that's a RWD pulley and a VE oil pump get the back of the pulley machined and buy these parts,

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How much would need to be machined by? I saw the link but doesn't say how much wider the collar is by itself. Could you PM me since I was going to email mazwork customer service anyway about this? My machinist could take off it but my biggest concern if there is any is of crank balancing. Would taking off material after the motor has been assembled and ran for a good awhile be an issue with vibration? Do you think ATI has a pulley for VE swap that is short or could make something like that? My buddy has money to spend but he wants to go fast and beat on it while not having to work on the car hence why im the one fixing it lol

hanzbrady · 04-15-2018, 04:04 PM

Quote:

Originally Posted by R3b

How much would need to be machined by? I saw the link but doesn't say how much wider the collar is by itself. Could you PM me since I was going to email mazwork customer service anyway about this? My machinist could take off it but my biggest concern if there is any is of crank balancing. Would taking off material after the motor has been assembled and ran for a good awhile be an issue with vibration? Do you think ATI has a pulley for VE swap that is short or could make something like that? My buddy has money to spend but he wants to go fast and beat on it while not having to work on the car hence why im the one fixing it lol

I'm not exactly sure just call Mazworx. I want to say pulley machining was $30-$80 and a 1 day turn around time.

There's no concern in causing an imbalance machining the back of the pulley. You're removing a even amount from as close to the center of rotation as possible.

The cranks in these engines are also zero balanced as well as the hubs and flywheels, it's not like an old 302 for example where the hubs and flywheels are precision counter weighted.

No one makes a pulley for the RWD VE setup you just have to modify the RWD one.

04-13-2018, 07:14 PM	#1
R3b Zilvia Junkie Join Date: Mar 2015 Location: South FL Age: 27 Posts: 581 Trader Rating: (0) Feedback Score: 0 reviews	Calling all SR Gurus, strange pulley issue. To make a long story short talked my buddy into picking up a "backyard" zenki with a built SR20vet, engine is solid but wiring wise the car is a mess. Had regular female clips to the VVL solenoid, mess of intercooler couplers, no eccs relay giving the ecu 12v, fan running 24/7 off ignition, tac jumps around like crazy or never reads, no speedo, shitty gauges, leaking a bit of oil by pan (which we fixed and did front/rear seal) etc Basically got it non running, turns out its the tune and put it back to "stock". Z32 maf with 370ccs on regular chipped ecu so now the issue is this. There is a crazy belt wine and further investigating looks like closest pulley to the block for the water pump and alt are all sorts of off.... Looks like the crank sits way too forward and when taking off the water pump pulley there were stacks of washers behind it. Now im coming from knowledge from building kas but does mix matching pulleys between s13/s14 cause so much of a gap? When I look up pictures online of sr20 crank pulley the timing pin is right on the edge of the pulley, on this motor which is a s13 harness inside an s14 not sure if s13 bottom block or s14 since the head is VVL. I think this pulley is from an s14 since I was reading that 3 rows is s14 and 4 rows is s13 for powersteering belts but when I looked up "lightweight" pulley all listing for sale online say for s13-s15 or just sr20 no matter year or chassis. I took off the crank pulley thinking it was the key but it checked out fine, retorqued it and landed up in the same spot. The gap between the crank pulley and timing mark is about the same distance thats off between the other pulleys. So not sure if I need to order the correct crank pulley for bottom end of the block(all sr20 share the same crank itself afaik) get different set of "light weight pulley" or something is up with the front cover stopping the crank from sitting closer to the block. My buddies pulley What i've seen online

04-14-2018, 12:18 AM	#2
Kingtal0n Post Whore! Join Date: Jul 2005 Location: South Florida Age: 41 Posts: 4,828 Trader Rating: (17) Feedback Score: 17 reviews	Jesus, (&#@#(&$ I've never heard of such shenanigans. Err if you dont know what you have, or can't tell, I recommend getting a complete accessory setup from a good running proper engine and swapping it over. Spacers under the water pump? Sounds like a nightmare for a setup which could be so simple and reliable. If not, you might have a FWD crank pulley or something. might wwant to start there edit: missed the VE part. thats a whole additional ball of wax you really didn't need or want, sorry. Last edited by Kingtal0n; 04-14-2018 at 01:23 AM..*

04-14-2018, 12:32 AM	#3
Yellow4g63 Zilvia FREAK! Join Date: Jan 2003 Location: Socal Posts: 1,454 Trader Rating: (5) Feedback Score: 5 reviews	If it's done right that would be a SR20VE front cover. And the timing mark won't line up. https://www.efisolutions.com.au/timi...-sr20ve-sr16ve __________________ 95 240sx RB20 415whp 91 Nx2000 VVL yo

04-14-2018, 07:45 AM	#4
hanzbrady Zilvia FREAK! Join Date: Apr 2015 Location: Floriduh Posts: 1,166 Trader Rating: (4) Feedback Score: 4 reviews	If that's a RWD pulley and a VE oil pump get the back of the pulley machined and buy these parts, http://www.mazworx.com/store/p/353-R...g-Pointer.aspx http://www.mazworx.com/store/p/266-M...ar-Spacer.aspx __________________ [email protected]

04-14-2018, 07:54 PM	#5
jr_ss Post Whore! Join Date: Dec 2005 Location: Pa Posts: 6,412 Trader Rating: (35) Feedback Score: 35 reviews	Agree with Hanz. Pulley needs to be machined and the timing pin relocator installed. You cannot time the motor without it. __________________ My SR20VET Does your VTC gear rattle in your S14/15 SR? PM me.