KA24E early 9.1:1 pistons - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

gripster · 02-19-2020, 02:51 AM

*** 9-9-20 Update ***

Building the engine for daily driver use and SCCA Solo II (autox) rules. As of today:

KA24E
Crank balanced
9.1:1 pistons from Traum Pistons
Cylinder head work by Rebello Racing

Questions:

Which head gasket do i get? What's better than Fel-Pro?

Head gasket bolts? Fel-Pro, Mahle, or ARP? Not exactly a high comp engine.

Which timing chain? Sealed power, Melling, or Cloyes?

*** /update ***

I'm getting a KA24E block rebuilt for my S13 and was looking for the early pistons with slightly higher 9.1:1 compression, part # 12010-40F10.

Late pistons were 8.6:1 compression.

As you can see, these early pistons are NLA/discontinued.

Link: http://datnissparts.com/x-flat-top-p...6-12010-40f10/

Did some digging and found this:

KA24 pistons in L28: https://www.classiczcars.com/forums/...istons-in-l28/

It mentions DNJ P616 flat top pistons.

Has anybody used the DNJ P616 pistons in a KA24E? Oversize also available.

I autox the car for fun and want to keep the sohc OE-spec in case i get competitive and people start protesting. ha ha. right.

Thanks for any input.

s13 @ fullboost · 02-23-2020, 03:22 AM

DNJ is horrible & I highly recommend you do not purchase that brand for anything let alone pistons. Shave a shit out of your head & use a thin head gasket.

gripster · 09-10-2020, 12:23 AM

Bump for more questions, like:

For head gasket, besides the OE-spec Fel-Pro, are there MLS (spelling?) or other options to look at?

S14rebuild · 09-10-2020, 04:11 AM

Google works....

https://www.google.com/search?sxsrf=...tMPxLGZ0A821:0

e1_griego · 09-10-2020, 10:16 AM

You should be fine with FelPro and for a stock build I wouldn't worry too much about it.

Is this an HS car? I see DSP in your vehicle description. Just curious.

gripster · 09-10-2020, 03:01 PM

Quote:

Originally Posted by e1_griego

You should be fine with FelPro and for a stock build I wouldn't worry too much about it.

Is this an HS car? I see DSP in your vehicle description. Just curious.

FelPro it is then, thanks.

It's been under DSP since 2007. With the head work--waiting to get it back from Rebello--it cannot go back to HS.

e1_griego · 09-10-2020, 04:11 PM

Gotcha.

Good luck taking down the RX8s and E46s

kyral · 10-26-2020, 09:36 AM

mellings chains are good
and I like mahle head bolts on nonboosted engines

kyral · 10-26-2020, 09:44 AM

Quote:

Originally Posted by s13 @ fullboost

DNJ is horrible & I highly recommend you do not purchase that brand for anything let alone pistons. Shave a shit out of your head & use a thin head gasket.

why don't you like DNJ?

02-19-2020, 02:51 AM	#1
gripster Leaky Injector Join Date: Jun 2005 Location: dodging cones in DSP Age: 45 Posts: 125 Trader Rating: (0) Feedback Score: 0 reviews	KA24E early 9.1:1 pistons * 9-9-20 Update * Building the engine for daily driver use and SCCA Solo II (autox) rules. As of today: KA24E Crank balanced 9.1:1 pistons from Traum Pistons Cylinder head work by Rebello Racing Questions: Which head gasket do i get? What's better than Fel-Pro? Head gasket bolts? Fel-Pro, Mahle, or ARP? Not exactly a high comp engine. Which timing chain? Sealed power, Melling, or Cloyes? * /update * I'm getting a KA24E block rebuilt for my S13 and was looking for the early pistons with slightly higher 9.1:1 compression, part # 12010-40F10. Late pistons were 8.6:1 compression. As you can see, these early pistons are NLA/discontinued. Link: http://datnissparts.com/x-flat-top-p...6-12010-40f10/ Did some digging and found this: KA24 pistons in L28: https://www.classiczcars.com/forums/...istons-in-l28/ It mentions DNJ P616 flat top pistons. Has anybody used the DNJ P616 pistons in a KA24E? Oversize also available. I autox the car for fun and want to keep the sohc OE-spec in case i get competitive and people start protesting. ha ha. right. Thanks for any input. __________________ 71, 72 Celicas; 85 AE88 hatch; 89 S13 hatch; 20 86TRD Last edited by gripster; 09-10-2020 at 12:26 AM.. Reason: Update w/ new Qs.

02-23-2020, 03:22 AM	#2
s13 @ fullboost Post Whore! Join Date: Dec 2007 Location: St.Petersburg,FL Posts: 2,550 Trader Rating: (15) Feedback Score: 15 reviews	DNJ is horrible & I highly recommend you do not purchase that brand for anything let alone pistons. Shave a shit out of your head & use a thin head gasket. __________________ Last edited by s13 @ fullboost; 02-23-2020 at 09:03 PM..

09-10-2020, 12:23 AM	#3
gripster Leaky Injector Join Date: Jun 2005 Location: dodging cones in DSP Age: 45 Posts: 125 Trader Rating: (0) Feedback Score: 0 reviews	Bump for more questions, like: For head gasket, besides the OE-spec Fel-Pro, are there MLS (spelling?) or other options to look at? __________________ 71, 72 Celicas; 85 AE88 hatch; 89 S13 hatch; 20 86TRD

10-26-2020, 09:36 AM	#8
kyral Zilvia Junkie Join Date: Nov 2012 Location: wisconsin Age: 33 Posts: 450 Trader Rating: (7) Rides Gallery: kyral Feedback Score: 7 reviews	mellings chains are good and I like mahle head bolts on nonboosted engines __________________ The Game you lose haha

09-10-2020, 04:11 AM	#4
S14rebuild BANNED Join Date: May 2019 Location: Florida-FAIL Posts: 2,495 Trader Rating: (8) Feedback Score: 8 reviews	Google works.... https://www.google.com/search?sxsrf=...tMPxLGZ0A821:0

09-10-2020, 10:16 AM	#5
e1_griego Post Whore! Join Date: Sep 2004 Location: Independence, Ore. Age: 40 Posts: 2,722 Trader Rating: (24) Feedback Score: 24 reviews	You should be fine with FelPro and for a stock build I wouldn't worry too much about it. Is this an HS car? I see DSP in your vehicle description. Just curious.

09-10-2020, 04:11 PM	#7
e1_griego Post Whore! Join Date: Sep 2004 Location: Independence, Ore. Age: 40 Posts: 2,722 Trader Rating: (24) Feedback Score: 24 reviews	Gotcha. Good luck taking down the RX8s and E46s