i have heard many things and my friend said that a tsx motor is a good block to keep stock and the head has the most agressive stock cams and would be able to port farther than a k20 head... so what is better a straight k24a2 or k24/k20 head? thank you

 

What is the purpose of the car? How crazy of a setup would it be?

 

if you want to remain stock block, go with the k24a2 because of the higher compression...

If you are going to be changing pistons and rods, go with k24a block and k20a2 head..

The tsx k24a2 motor has a head that needs better seals and seats to accept aftermarket cams and flows a little bit less than the rsx s head..

With cams a stock tsx can go around 250whp max... a stock k24a/k20a2 cannot go that high with cams due to lower compression. In both cases, a k20a2 oil pump is suggested and better rods... The tsx rods are stronger than the average k24a rods but still weak.. there is a lot more information, just search honda tech and google.com

 

o thanks for the information because im getting kinda tired of boost its no longer fun since anyone can do it... im just wanting a good piston/rod all motor set up... do stock k series sleeves hold up pretty well?

 

stock kseries sleeves will be fine up to 87.5mm... There are people with 88mm but that is risky because not much meet left at 88mm

I have put together more than a few k24a/k20a2 and had some partially assembled by shops.

I would recommend around 12.5:1 compression , 87.5mm or if you can afford sleeves, 89mm... and some good rods...

Pistons: wiseco, JE, CP are good
Rods: IB spec , carillo, crower

My favorite are the JE pistons

For rods I have used both crower and IB spec and they are good.

You might want to refer to my 270whp recipe thread

https://honda-tech.com/zerothread?id=1868865


With a basic stock sleeved k24a, you can get around 260whp-290 with the right parts , with a stock RBC manifold...

The 30whp variation, depends on cams, piston, header, intake, tuning and of course the kind of dyno you are using..

 

very nice thank you for the help i will most likely be talking to you alot during this build process and also what header do you prefer and most power gains? and did you do your build on stock sleeves? and is it safe to be at 87.5 daily?