f20a dohc

[jacobuchanan140]

ive looked around and most of the sites that sell engines dont have the dohc f20a. does someone know where i could source one?

[Boost_Lee]

i have one that needs a little work

i got mine way back when and the shop isnt open anymore...checked ebay yet?

[jacobuchanan140]

what needs work on yours?
ebays a little questionable for that much money but if it comes down to it i think theres a few reputable companies on there

[Boost_Lee]

it needs a new piston and some valve seals. The motor was torn down, and i found a bad ringland on piston 3. Cylinder walls look good. If you want more info, feel free to PM me bro

[deevergote]

If you call most of the shops you find, they might be able to get one for you. Keep in mind, they aren't going to bother advertising the less popular engines.

If you're thinking turbo, you'll want to rebuild... so 91accordr33's motor would be a wise choice.

[jacobuchanan140]

i may run a turbo setup with small boost on my auto but i was just lookin to be different

[Boost_Lee]

exactly what i did in the past. F20a dohc boost. I was only of only a few. Keep in mind that these motors have higher compression so tuning isnt as forgiving as a f22a. get it done right.

If you do want to rebuild for boost, slapping some forged pistons should get you some decent numbers on 12psi

[F20A CB7]

http://shop.ebay.com/items/f20a-dohc...kwZf20aQ20dohc

[jacobuchanan140]

so i could run about 12psi on only forged pistons? or would i need a few more little things? and as for my tranny, could i leave it alone or would it need to be rebuilt for good measure?

[Boost_Lee]

auto tranny...tough decision. AT THE LEAST, put in an external tranny cooler. I know I blew mine from hard shifts all the time...but a rebuild coulnt hurt. For that price, I'd go 5 spd, personally.

I think 12 psi would hold on forged pistons. I think you can see close to 300hp on stock sleeves ( I THINK...i have seen f22bx's put down that much stock ). I would have the f20 in tip top shape if ur going to do that though...anyone agree or disagree?

[deevergote]

If you get forged pistons, you can drop the compression... making it a bit safer to run higher boost.

I think people have taken the stock sleeves to 15psi. Still, I'd hold back and not push your luck. 12psi would probably be safe (people run that on stock F22As... again, that's the extreme, and probably not good for long).


As for the auto tranny, DEFINITELY put an external cooler on there. Some Redline fluid would be wise as well. A rebuild, even a beefed up rebuild, would be a good idea... but they don't come cheap. Level 10 is a popular company for auto rebuilds and upgrades.

[jacobuchanan140]

eh ill go n/a
would the h23 IM still be an upgrade? and how about cam regrinds?
whats the performance scene look like for these n/a?

[deevergote]

They're fairly uncommon, so upgrades won't be nearly as easy to find as the other motors... but you can probably find something. I don't know enough about them myself to help, unfortunately.

[jacobuchanan140]

eh ill do some research. first i need to try to source one locally

[SN2BH22CB7]

www.F22parts.com

to be more exact if you're willing to stay SOHC..here

http://www.f22parts.com/parts_page_cylinderhead.htm

head parts:

http://www.f22parts.com/parts_page_cylinderhead.htm

lower engine:

http://www.f22parts.com/parts_page_enginelower.htm

auto tranny parts:

http://www.f22parts.com/parts_page_AT.htm