H22A/H23 FRM, which pistons & rings, cams
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H22A/H23 FRM, which pistons & rings, cams
I have an h22a with h23 crank & rods. It have p13 vtec head. In other words, it h23 vtec. I wasn't sure what to build. Thinked about h2b, turbo with and without resleeve... Because I don't want to throw all that money I will go N/A with a mild refresh of the internals.
My questions:
As it is FRM I just can't throw forged pistons without resleeve. Which pistons can I use? Can I use the type-s pistons from eBay to get higher compression? Will them work with h23 stroke & rod length?
http://m.ebay.com/itm/181401984292?nav=WATCHING_ACTIVE
I read on other thread that type-s cam shaft will have clearance issues with the valve guides? Is that right, any form to solve this? Other better/good OEM/aftermarket cam to go with?
Any other advise is good to hear!
My questions:
As it is FRM I just can't throw forged pistons without resleeve. Which pistons can I use? Can I use the type-s pistons from eBay to get higher compression? Will them work with h23 stroke & rod length?
http://m.ebay.com/itm/181401984292?nav=WATCHING_ACTIVE
I read on other thread that type-s cam shaft will have clearance issues with the valve guides? Is that right, any form to solve this? Other better/good OEM/aftermarket cam to go with?
Any other advise is good to hear!
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From: b00sting my D16s, SoWis, USA
Re: H22A/H23 FRM, which pistons & rings, cams
They'll stick out 0.020" on an undecked block. The H22 head has ~0.045" of a recess til you get to the quench pads, but it's actually ~86.5mm. If you open the combustion chambers 0.3mm all the way around, there shouldn't be any HEAD clearance problems.
You'll still want to check valve clearance. H22 pistons will stick out the same, so if you have a set you can use them to clay it for P2V clearance. Otherwise you'll need to get at least a 0.046" headgasket, dropping CR to 11.5:1 from 12.1:1.
A 95mm H22 is quite a bit of torque & power for a H2B Civic/Integra/CRX, especially with cams & compression.
You'll still want to check valve clearance. H22 pistons will stick out the same, so if you have a set you can use them to clay it for P2V clearance. Otherwise you'll need to get at least a 0.046" headgasket, dropping CR to 11.5:1 from 12.1:1.
A 95mm H22 is quite a bit of torque & power for a H2B Civic/Integra/CRX, especially with cams & compression.
Thread Starter
Honda-Tech Member
Joined: Apr 2014
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Re: H22A/H23 FRM, which pistons & rings, cams
They'll stick out 0.020" on an undecked block. The H22 head has ~0.045" of a recess til you get to the quench pads, but it's actually ~86.5mm. If you open the combustion chambers 0.3mm all the way around, there shouldn't be any HEAD clearance problems.
You'll still want to check valve clearance. H22 pistons will stick out the same, so if you have a set you can use them to clay it for P2V clearance. Otherwise you'll need to get at least a 0.046" headgasket, dropping CR to 11.5:1 from 12.1:1.
A 95mm H22 is quite a bit of torque & power for a H2B Civic/Integra/CRX, especially with cams & compression.
You'll still want to check valve clearance. H22 pistons will stick out the same, so if you have a set you can use them to clay it for P2V clearance. Otherwise you'll need to get at least a 0.046" headgasket, dropping CR to 11.5:1 from 12.1:1.
A 95mm H22 is quite a bit of torque & power for a H2B Civic/Integra/CRX, especially with cams & compression.
My major concern is the fact of the frm cylinders. Not sure which pistons I can use. Also the clearance issues with type s or aftermarket cams.
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Re: H22A/H23 FRM, which pistons & rings, cams
Have concerns about p2v clearance.
Decide t o stay with my setup, h22A block & pistons (p13) with f22 95mm stroke & rods. Basiclly h23 with h22 pistons. Pistons top (dome obviouly is out) "looks" almost flush with the block.
Have stock cams but I would want to know piston to valve clearance to be sure how far I can go with cam advance/retard, and obviously if can put those high compression piston and other cams.
Also the head is stock but I will send to "resurface". Just enough to have a flat surface.
Decide t o stay with my setup, h22A block & pistons (p13) with f22 95mm stroke & rods. Basiclly h23 with h22 pistons. Pistons top (dome obviouly is out) "looks" almost flush with the block.
Have stock cams but I would want to know piston to valve clearance to be sure how far I can go with cam advance/retard, and obviously if can put those high compression piston and other cams.
Also the head is stock but I will send to "resurface". Just enough to have a flat surface.
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