Ka24de Bore Question...

Lurpin · 08-10-2008, 03:58 AM

So I've done some research on Ka-t.org and I have come to the conclusion that a safe bore for a ka24de engine going for about 275-300hp (of course boosted) would be about .20 over. Does this sound about right?

***S14DB*** · 08-10-2008, 04:20 AM

What do you mean by "safe bore?"

Lurpin · 08-10-2008, 04:32 AM

Like the walls aren't to thin and they wont crack.

*sac* · 08-10-2008, 04:43 AM

You do know you will not have to bore out to reach the suggested power goals right?
depending on what tq your seeking and where you want the hp and tq to come into play, and where you want it to max out in the rpms may determine whether it would be worth it to open up the cylinder.(along with turbo, Ic, etc..) A .020 bore is considered safe by alot of people.

Lurpin · 08-10-2008, 04:48 AM

Quote:

Originally Posted by sac

You do know you will not have to bore out to reach the suggested power goals right?
depending on what tq your seeking and where you want the hp and tq to come into play, and where you want it to max out in the rpms may determine whether it would be worth it to open up the cylinder.(along with turbo, Ic, etc..) A .020 bore is considered safe by alot of people.

Thank you thats all i needed to know. I was just planning to bore it out because I'm not sure if the cylinders is scored or not, so I was just gonna plan to bore it out either way.

*sac* · 08-10-2008, 04:54 AM

they could just clean the cylinders up at the machine shop. Boring to .020 cost me a extra 175 at machine shop. If your cylinders dont need it, and you dont need more displacement, you could use that on a nice fuel rail, or arp studs or something.

Lurpin · 08-10-2008, 05:03 AM

Yea, they could. Nothing has gone through yet so I can still decide before I order the parts.

Lurpin · 08-10-2008, 11:22 PM

I didn't wanna make a new thread for this question cause I didn't wanna take up more space. I looked around in the forums for a place that sells rebuild kits or at least all the parts for a rebuild because I would like to buy everything from the same place. The only reliable places that some people suggested are not in buisness anymore besides rpmmachine.com. I also was looking at phase2performance but they do not sell all the parts I need. What do you guys suggest?

Mikey88 · 08-10-2008, 11:25 PM

you bore for compression and since you wanna boost the ka you wanna go from the 10:1 compression to 8:1 at least...anyways AMS sells rebuild kits for the ka pricey but pretty complete... heres a link to their kits
Automoto Sports Copyright&copy AMS 2006

Lurpin · 08-10-2008, 11:49 PM

do you know if the pistons in this kit are forged?

Edit: and the rods?

Mikey88 · 08-11-2008, 12:07 AM

yes the arias pistons and ams connecting rods are forged..just ask the guys at ka-t.org a lot of the guys on there use the kit...i for one wouldve went with the kit if i went the ka-t route.

Lurpin · 08-11-2008, 01:13 AM

k thank you.

08-10-2008, 03:58 AM	#1 (permalink)
Lurpin Leaky Injector Join Date: Jul 2007 Location: Maui, Hawaii Posts: 117 Trader Rating: (0)	Ka24de Bore Question... So I've done some research on Ka-t.org and I have come to the conclusion that a safe bore for a ka24de engine going for about 275-300hp (of course boosted) would be about .20 over. Does this sound about right? __________________ http://i31.photobucket.com/albums/c3...viaSigcopy.jpg

08-10-2008, 04:20 AM	#2 (permalink)
*S14DB* AFC #1 Join Date: Oct 2003 Location: 昨晩あなたのお母さんの家 Posts: 12,536 Trader Rating: (1) Rides Gallery: S14DB	What do you mean by "safe bore?" __________________ Coco is the new pink.

08-10-2008, 04:32 AM	#3 (permalink)
Lurpin Leaky Injector Join Date: Jul 2007 Location: Maui, Hawaii Posts: 117 Trader Rating: (0)	Like the walls aren't to thin and they wont crack. __________________ http://i31.photobucket.com/albums/c3...viaSigcopy.jpg

08-10-2008, 04:43 AM	#4 (permalink)
sac Premium Member Join Date: Feb 2008 Location: The SLC, Utah Age: 23 Posts: 594 Trader Rating: (3)	You do know you will not have to bore out to reach the suggested power goals right? depending on what tq your seeking and where you want the hp and tq to come into play, and where you want it to max out in the rpms may determine whether it would be worth it to open up the cylinder.(along with turbo, Ic, etc..) A .020 bore is considered safe by alot of people. __________________ 95Kouki s14 doin LS2 swap! LOOKIN FOR KOGNITION CARBON SUNROOF DELETE PANNEL FOR S14

08-10-2008, 04:54 AM	#6 (permalink)
sac Premium Member Join Date: Feb 2008 Location: The SLC, Utah Age: 23 Posts: 594 Trader Rating: (3)	they could just clean the cylinders up at the machine shop. Boring to .020 cost me a extra 175 at machine shop. If your cylinders dont need it, and you dont need more displacement, you could use that on a nice fuel rail, or arp studs or something. __________________ 95Kouki s14 doin LS2 swap! LOOKIN FOR KOGNITION CARBON SUNROOF DELETE PANNEL FOR S14

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08-10-2008, 05:03 AM	#7 (permalink)
Lurpin Leaky Injector Join Date: Jul 2007 Location: Maui, Hawaii Posts: 117 Trader Rating: (0)	Yea, they could. Nothing has gone through yet so I can still decide before I order the parts. __________________ http://i31.photobucket.com/albums/c3...viaSigcopy.jpg

08-10-2008, 11:22 PM	#8 (permalink)
Lurpin Leaky Injector Join Date: Jul 2007 Location: Maui, Hawaii Posts: 117 Trader Rating: (0)	I didn't wanna make a new thread for this question cause I didn't wanna take up more space. I looked around in the forums for a place that sells rebuild kits or at least all the parts for a rebuild because I would like to buy everything from the same place. The only reliable places that some people suggested are not in buisness anymore besides rpmmachine.com. I also was looking at phase2performance but they do not sell all the parts I need. What do you guys suggest? __________________ http://i31.photobucket.com/albums/c3...viaSigcopy.jpg

08-10-2008, 11:25 PM	#9 (permalink)
Mikey88 Zilvia Member Join Date: Jul 2008 Location: Somewhere in California Age: 20 Posts: 150 Trader Rating: (0)	you bore for compression and since you wanna boost the ka you wanna go from the 10:1 compression to 8:1 at least...anyways AMS sells rebuild kits for the ka pricey but pretty complete... heres a link to their kits Automoto Sports Copyright&copy AMS 2006

08-10-2008, 11:49 PM	#10 (permalink)
Lurpin Leaky Injector Join Date: Jul 2007 Location: Maui, Hawaii Posts: 117 Trader Rating: (0)	do you know if the pistons in this kit are forged? Edit: and the rods? __________________ http://i31.photobucket.com/albums/c3...viaSigcopy.jpg

08-11-2008, 12:07 AM	#11 (permalink)
Mikey88 Zilvia Member Join Date: Jul 2008 Location: Somewhere in California Age: 20 Posts: 150 Trader Rating: (0)	yes the arias pistons and ams connecting rods are forged..just ask the guys at ka-t.org a lot of the guys on there use the kit...i for one wouldve went with the kit if i went the ka-t route.

08-11-2008, 01:13 AM	#12 (permalink)
Lurpin Leaky Injector Join Date: Jul 2007 Location: Maui, Hawaii Posts: 117 Trader Rating: (0)	k thank you. __________________ http://i31.photobucket.com/albums/c3...viaSigcopy.jpg

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