Boreing and sleeving, check this out.

[theBeline]

If I could get some one to set up a sleeve kit for our A20A that could handle +30lbs of boost and nos, who all would be interested? I.E. I don't think I could get them to just make one.

[Justin86]

I belive our stock CAST-IRON block should be able to handle that much PSI. Also the sleeves would be cast-iron so you are adding cast-iron to cast-iron. That dosn't make sense to be. If it was an alumnium B-series block I could see the point behind getting it resleeved but not our A20. But pistion and rods that can handle 30 PSI and NOS would be nice.

[AccordEpicenter]

yeah our blocks are not open deck too like those b series blocks, and they are cast iron and are bulletproof for boost. The stock bottom ends are very strong except for pistons. This cannot be said of all hondas like D series engines with weak rods/crank/pistons... but our A20s are a good thing to build up

[theBeline]

sooo, about how much could we bore them and where do you think we could find pistons rods and crank shafts to handle it?

Are you SURE that they could handle 30+ pounds of boost?

[Justin86]

I can't remember how much you can bore the blocks but it is not much. I would be better to get a port and polish job done.

[bobafett]

20 over i think is the unofficial max

anyway nobody knows if an a20 can handle 30psi, but it sure as fuck wont do it stock. also why would an a20 handle that much. cast iron or not, thats a lot of fucking boost. thats like racecar boost.

[AccordEpicenter]

well the engine wont take 30 psi for 2 reasons, the pistons are weak and the headgasket would be wasted after a few minutes of boosting at 30 psi, youd need to o ring and all that crap for the block, with a copper headgasket. Thats not cheap. BTW if you look around youll find people that have built 400+ hp honda engines using stock rods/crank with just changed pistons and stuff and they hold up pretty well, except for d series engines.

[Justin86]

I was told that the rods were ok strenght wise but it would be a good idea to get better ones when you do a turbo. I would think that the block can handle 30 psi, it is cast-iron. The most psi I have seen was 34psi on a 1,200hp Supra.:badass:

[Sean]

rods ok. crank shaft mian bearing caps need studs. so does the head. pistons bad.

[shepherd79]

what do you mean 30PSi would be too much. look at turboaccord. he is running almost 30psi with nice internals and the block is doing ok.

[theBeline]

not for long. any way, 30psi is alot, I like to dream a little. the reason i originaly said 30 was because I was looking at some of the sleeving kits out there rated at 30, but your right, why keep the A20A if thats the road you'd want to go down? I might as well do a swap and get the same numbers with 10psi on a different block...

[Justin86]

Hey new updates on the most PSI. I was reading this mag. and there was a 1/4mile drag Neon that was making 1,260hp with 42PSI. 4 banger all the way.:D

[1988starter]

OK guys justin is not running 30 PSI he is hoping to run 20-25 soon.

[1989 DX R]

The SRT-4 uses a cast iron block.

[IWLSF]

True about Neon, cast-iron. Second, most boost I've seen on a real-world application was 46 lbs. Third, turboaccord does run high boost, but seeing as how it's almost still a work-in-progress and I dont picture the guy as one of those 'lemme boost 30 lbs and floor it at every light I hit,' I dont know about the motor supporting it for very long. Just crank it down for daily driving.

[toastyghost]

does anyone know what material the b20a block is made of? i want to go b20a turbo and maybe nos but i don't fucking want to spend a fortune on bottom end build.. HAYE OK

[Mike's89AccordLX]

Well I have read pretty much ever single b20a thread on the engine swaps and I don't know what the block is made up of. I would assume it's cast iron but who knows? I have spent the last 7.5 hours reading about the jdm b20a engine swap and I really want to have it. I don't know whether or not I want a turbo setup or if I want to have it carbed or FI. I do know it will be sweet. And it will take about 5 or 6 months to save up for the complete engine. I plan to pay about $1000-$1200 shipped for a b20a with a 5 speed tranny. I plan to take about a year maybe more to rebuild it and modify the crap out of it. Or maybe I should rebuild it and then put it in then modify it so then I can feel the benefits rather than just look at them. I know for sure I will run a nitrous system with the motor.

[Justin86]

I would think it is cast iron cause it is an older engine, but I really don't have a clue.

[Johnny O]

The A20A3 and B20 are both cast iron don't need to sleeve neither.The A20 max bore is 40 over.The block can handle 30 psi,but the headgasket can not,2 runs and blow gasket.Will try 30 now have o-ring and ARP studs,so this will help hold down gasket.SCE makes copper gasket but I have had touble with it,have gone back to paper gaskets and had better luck.

[toastyghost]

Originally posted by AccordEpicenter
well the engine wont take 30 psi for 2 reasons, the pistons are weak and the headgasket would be wasted after a few minutes

Not to dis but I think you missed the fucking boat on this one, captain. We're talking about if the BLOCK will hold up to the pressure. The other shit obviously needs to be built up.

[carotman]

He hem...

The B20A is an aluminium block.. It's closed deck tough.