ka24de piston and turbo queststions - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

2_fast_240 · 11-01-2005, 08:18 PM

Ive been planning on rebuilding my ka24de in my 91 240sx and getting a turbo kit for it. Then i found a short block on importperformanceparts.net that is machined & assembled w/over-sized pistons, rings, matching crank kit, connecting rods and camshafts for only $819 from "topline". Ive heard that the stock ka24de motor comes with forged pistons. this is an OEM short block but it seems like it would be impossible for it to be that cheap if it comes with forged pistons. so my first question is if anybody knows if it does or doesnt come with forged pistons. the bore on this block is 96mm compared to 89mm on the stock block. ive also heard that if your planning on turbocharging you shouldnt get oversized pistons. so my second question is if i should go with these oversized pistons or not. any information at all about these subjects would be greatly appriciated.

theicecreamdan · 11-01-2005, 08:26 PM

stock KA has forged rods not pistons

2_fast_240 · 11-01-2005, 08:36 PM

ok, my mistake. but still i would probably like to get this short block and just buy some forged pistons to put in it because it still sounds like a hell of a deal. so if anyone has any answers about the oversized pistons please help me out. also, how much could the motor take on the stock pistons?

DP_Michelle G · 11-02-2005, 12:18 AM

you should really go out and buy a book on engine buliding. it will help you out alot atleast it did for me.

Why would you buy this block just to rebulid again with forged pistons? why not just do that from the start.

sideview_180sx · 11-02-2005, 01:31 AM

use the SEARCH button. or go to www.ka-t.org. Read threads before asking questions, because you are not the first that has done this. Answers and more results await you if you just search.

BigVinnie · 11-02-2005, 08:32 AM

Why do you keep calling it a short block?????? The 2.2/2.4litre naps-z/ka24e/de engines are long blocks.
2.0litre engines and below are short blocks, it is in reference to the deck heigth of engine block. For rebuild kits those topline kits are alright, but you would be better off putting together your own kit with better parts.

2_fast_240 · 11-02-2005, 11:00 AM

well that is what they call it on the site and i think they probably know more than you bigvinnie. ive always thought a short block came with just the internals and a long block came with a complete head, intake, timing components, etc.

Romeyo07 · 11-02-2005, 11:50 AM

Quote:

Originally Posted by BigVinnie

Why do you keep calling it a short block?????? The 2.2/2.4litre naps-z/ka24e/de engines are long blocks.
2.0litre engines and below are short blocks, it is in reference to the deck heigth of engine block. For rebuild kits those topline kits are alright, but you would be better off putting together your own kit with better parts.

someone note this for future reference

theicecreamdan · 11-02-2005, 12:03 PM

isnt short block just the bottom end, but a longblock includes the head?

thats how I have understood buying crate engines.

SimpleS14 · 11-02-2005, 12:17 PM

^-- correct

Quote:

Originally Posted by http://en.wikipedia.org

Short block is an automotive term describing a bare engine including the block, crankshaft, and pistons, but not including the head, manifolds or any accessories like alternator or power steering pump. May or may not include camshaft. The camshaft will probably be included if the engine is a pushrod design and will not be included if it uses an overhead camshaft.

Quote:

Originally Posted by http://en.wikipedia.org

Long block is an automotive term describing a bare engine including the block, head, valves, crankshaft, camshaft, and pistons, but does not include the manifolds or any accessories like the alternator or power steering pump. May not include the oil pan or valve covers.

DP_Michelle G · 11-02-2005, 02:20 PM

Quote:

Originally Posted by BigVinnie

Why do you keep calling it a short block?????? The 2.2/2.4litre naps-z/ka24e/de engines are long blocks.
2.0litre engines and below are short blocks, it is in reference to the deck heigth of engine block. For rebuild kits those topline kits are alright, but you would be better off putting together your own kit with better parts.

LOL

*NemeGuero* · 11-02-2005, 04:31 PM

Quote:

Originally Posted by DP_Michelle G

LOL

no.. read the post above yours

theicecreamdan · 11-02-2005, 07:35 PM

no noting bad information for future reference.

BigVinnie · 11-02-2005, 09:22 PM

Shiat I said something stupid and we learned from it...... What can I say learned this thing called humility. I fuck myself on definitions everyday....

Yeah on another note. www.ka24de.com sells supertech pistons for a little under $489, supposedly they are the best for the KA. www.nizzx.com sold eagle forge rods for the KA24de and E for $389 in H beam, I don't know if they have sold out of them yet, but it was a seasonal deal.

2_fast_240 · 11-04-2005, 10:49 AM

alright, im glad that issue was cleared up. but does anyone know about how far you could go with a turbo kit on stock internals before needing forged pistons.

*NemeGuero* · 11-04-2005, 11:44 AM

Depends on how much boost. anything over 6-8 will need stronger internals basically. There are people running 10-15psi on stock blocks, but they won't last very long.

DP_Michelle G · 11-04-2005, 02:21 PM

It also depends on the condition of the motor

BigVinnie · 11-04-2005, 04:30 PM

Abel Racing is running 2 KA's on stock internals @ 386rwhp.

11-01-2005, 08:18 PM	#1
2_fast_240 Zilvia Member Join Date: Aug 2005 Location: Virginia Posts: 194 Trader Rating: (0) Feedback Score: 0 reviews	ka24de piston and turbo queststions Ive been planning on rebuilding my ka24de in my 91 240sx and getting a turbo kit for it. Then i found a short block on importperformanceparts.net that is machined & assembled w/over-sized pistons, rings, matching crank kit, connecting rods and camshafts for only $819 from "topline". Ive heard that the stock ka24de motor comes with forged pistons. this is an OEM short block but it seems like it would be impossible for it to be that cheap if it comes with forged pistons. so my first question is if anybody knows if it does or doesnt come with forged pistons. the bore on this block is 96mm compared to 89mm on the stock block. ive also heard that if your planning on turbocharging you shouldnt get oversized pistons. so my second question is if i should go with these oversized pistons or not. any information at all about these subjects would be greatly appriciated.

11-02-2005, 01:31 AM	#5
sideview_180sx Zilvia FREAK! Join Date: Apr 2005 Location: somewhere north of mexico Posts: 1,538 Trader Rating: (3) Feedback Score: 3 reviews	use the SEARCH button. or go to www.ka-t.org. Read threads before asking questions, because you are not the first that has done this. Answers and more results await you if you just search. __________________ feel the rythym. feel the ride. get on up. it's bobsled time. COOL RUNNINGS!!! formerly sideviewcivic Save a Horse. Drift This Cowboy. AirBag Club Member #0014

11-02-2005, 08:32 AM	#6
BigVinnie Zilvia FREAK! Join Date: Apr 2003 Location: Walnut Crizzle, Crackifornia Age: 46 Posts: 1,266 Trader Rating: (0) Rides Gallery: BigVinnie Feedback Score: 0 reviews	Why do you keep calling it a short block?????? The 2.2/2.4litre naps-z/ka24e/de engines are long blocks. 2.0litre engines and below are short blocks, it is in reference to the deck heigth of engine block. For rebuild kits those topline kits are alright, but you would be better off putting together your own kit with better parts. __________________

11-02-2005, 09:22 PM	#14
BigVinnie Zilvia FREAK! Join Date: Apr 2003 Location: Walnut Crizzle, Crackifornia Age: 46 Posts: 1,266 Trader Rating: (0) Rides Gallery: BigVinnie Feedback Score: 0 reviews	Shiat I said something stupid and we learned from it...... What can I say learned this thing called humility. I fuck myself on definitions everyday.... Yeah on another note. www.ka24de.com sells supertech pistons for a little under $489, supposedly they are the best for the KA. www.nizzx.com sold eagle forge rods for the KA24de and E for $389 in H beam, I don't know if they have sold out of them yet, but it was a seasonal deal. __________________

11-04-2005, 04:30 PM	#18
BigVinnie Zilvia FREAK! Join Date: Apr 2003 Location: Walnut Crizzle, Crackifornia Age: 46 Posts: 1,266 Trader Rating: (0) Rides Gallery: BigVinnie Feedback Score: 0 reviews	Abel Racing is running 2 KA's on stock internals @ 386rwhp. __________________

11-01-2005, 08:36 PM	#3
2_fast_240 Zilvia Member Join Date: Aug 2005 Location: Virginia Posts: 194 Trader Rating: (0) Feedback Score: 0 reviews	ok, my mistake. but still i would probably like to get this short block and just buy some forged pistons to put in it because it still sounds like a hell of a deal. so if anyone has any answers about the oversized pistons please help me out. also, how much could the motor take on the stock pistons?

11-02-2005, 12:18 AM	#4
DP_Michelle G Zilvia Addict Join Date: Aug 2005 Location: Anaheim/OC Age: 42 Posts: 666 Trader Rating: (0) Feedback Score: 0 reviews	you should really go out and buy a book on engine buliding. it will help you out alot atleast it did for me. Why would you buy this block just to rebulid again with forged pistons? why not just do that from the start.

11-02-2005, 11:00 AM	#7
2_fast_240 Zilvia Member Join Date: Aug 2005 Location: Virginia Posts: 194 Trader Rating: (0) Feedback Score: 0 reviews	well that is what they call it on the site and i think they probably know more than you bigvinnie. ive always thought a short block came with just the internals and a long block came with a complete head, intake, timing components, etc.

11-04-2005, 10:49 AM	#15
2_fast_240 Zilvia Member Join Date: Aug 2005 Location: Virginia Posts: 194 Trader Rating: (0) Feedback Score: 0 reviews	alright, im glad that issue was cleared up. but does anyone know about how far you could go with a turbo kit on stock internals before needing forged pistons.

11-04-2005, 11:44 AM	#16
NemeGuero No more nissan. Join Date: Jan 2003 Location: RAIN, Washington. Age: 40 Posts: 8,132 Trader Rating: (10) Rides Gallery: NemeGuero Feedback Score: 10 reviews	Depends on how much boost. anything over 6-8 will need stronger internals basically. There are people running 10-15psi on stock blocks, but they won't last very long.

11-04-2005, 02:21 PM	#17
DP_Michelle G Zilvia Addict Join Date: Aug 2005 Location: Anaheim/OC Age: 42 Posts: 666 Trader Rating: (0) Feedback Score: 0 reviews	It also depends on the condition of the motor