Alright i just got a couple of f22b1 long blocks and i am contemplating a couple different options. Option number one is that i keep the stock crank and have the rod journals ground down 3mm so i can run the 5.9 eagle b series rods(cost reasons). Or number two i ditch the stock crank for an a20a(older accord) witch is 91mm instead of 95 and already has b series size rod journals, but i believe they may have an odd main journal size. i just have a feeling that the b series rod journals may not hold up under the stress on the longer stroke. but so far the only problems i have seen with the b series strokers in spun main bearings.soooo i just want some input. another question i have is what does the f22 head like as a far as porting? what are the valve sizes? i know bisi says his will outflow any k series head so they definitely have potential. any insight you could give me would be greatly appreciated. and please no stupid "but why are you building that" comments.

 

hmm.....i find it hard to believe that nobody knows anything

 

I am sure you have read both of those but personally, I would do one of those two options over stroking the f22.
https://honda-tech.com/zerothread?id=776837
https://honda-tech.com/zerothread?id=1046336

Obviously adding more stoke will yield more stress on the rotating assembly in the end. Out of the two options, I would have the rod journals ground down to fit a b series rod. I would try and shy away from the a20a crank.

I am a big fan of using the F22 block because it is cheap. Unfortunately the lack of aftermarket support for the head makes using it less practical. You can make a head flow but that does not mean it will make more power. It is all about the total package. I helped a friend turbo his accord and he ran .5mm over valves and just a mild casting cleanup. It seems pretty quick at 6 pounds. I am sure something like that would work for an NA setup.

Personally, I would rather put my money towards having the H22 head on the F22 block. In the end, you will save money by having a head that is accepted by the aftermarket. Plus the H22 flows better than the F22 to begin with. You can either spin the motor faster, add displacement, or make it more efficient. You have gotten yourself in the honda world obviously knowing that the displacement aspect of the car is lacking (why would you be asking this question otherwise). If you take some time to count noses, you will see all the fast guys are revving their cars to the moon. I would try and orient myself in that direction. Sorry for rambling. Hope that helps my .02.

 

I think that running the 95mm stroke is not that bad. If you properly build the bottom end with a focus on the oiling system then you should be able to rev the **** out of it.

The biggest problem seems to be that that particular crank tends to spin bearings from elevated revs. So upgrade the oil pump gear, teardrop the journal oil holes and maybe shim the oil pump bypass spring for more pressure. Then balance the whole rotating assembly and you should probably be fine.

As far as head work I think that the hardest part is to find a head pacakge to compliment a serious cam. Bisi might have said that the head flows really well but the fact is that the F22's were not built on a max power performance angle. they are predominatntly in family sedans. It might be a good Idea to contact Bisi since he seems to be the most knowledgeable on that subject.

Also if you do not want to grind the crank down then you should look here for H23/F22 rods:

http://www.kteller.com/store/p...d/815

they are fairly inexpensive.
Good luck
Pirate

 

well its not necessarily that i want to gain displacement its just the fact i am tryin to bypass the need for extremely pricey custom rods. the stroking or destroking is just a necessary evil i guess. i guess h22 rods might be an option as they improve my r/s ratio slightly and are off the shelf, i would just have to use a custom piston.all in all i can t decide if its even worth it to keep the extra displacement rather than just buyin a h22 crank. and i wasn t implying that the head flowed extremely well from the factory, i understand the extreme amount of portwork that will probably be required. anyway thanks for the input guys.

 

bisi doesnt run the b1 block or head, he runs the f22a, which is non-vtec and flows alot better than the b1, so you need to look into things a lil better.