need some help/info on sleeved blocks!
need some help/info on sleeved blocks!
ok so i found a killer deal on an h22 i plan on buying. the guy was origanally going all motor and had the block cut for 90mm pistons, but hadn't had the sleeves pressed in yet. i was going to do an na/n2o build up, but then i decided that the amout of power i want and the amount of time ill want it im better off going w/turbo, dont need to be refilling everyday.
so i guess that leaves me w/a few questions
1. can i sleeve this block to accept smaller pistons for a turbo setup? and will this make it any weeker?
2. if not, w/good fuel mgmt could i run a turbo and 90mm and not have it blow up in 2 months?
3. if i go back to my na/n2o build up can i run high amounts of n2o (150+) w/this size piston, and again not have blow up on me in 2 months?
thanks for all the help
-Vinny
so i guess that leaves me w/a few questions
1. can i sleeve this block to accept smaller pistons for a turbo setup? and will this make it any weeker?
2. if not, w/good fuel mgmt could i run a turbo and 90mm and not have it blow up in 2 months?
3. if i go back to my na/n2o build up can i run high amounts of n2o (150+) w/this size piston, and again not have blow up on me in 2 months?
thanks for all the help
-Vinny
Honda-Tech Member
Joined: Feb 2000
Posts: 4,887
Likes: 0
From: Milwaukee, WI
Re: need some help/info on sleeved blocks! (93ludevtec)
Well, first of all...how did he have the block "cut" to fit 90mm pistons with no sleeves? Did he just bore out the stock sleeves to 90mm? Or were the new sleeves he had 90mm?
Anyways, to answer your questions, the problem won't be in the 90mm bore itself....but in the headgasket. With less deck area, you'll need to keep an eye on sealing it properly. If you plan on resleeving it anyways with new sleeves, stick with the stock bore. Whatever displacement you lose against a 90mm bore, will be gained by being able to boost higher, or run higher nitrous jets.
Forged pistons can handle alot of abuse, be it from turbo boost or nitrous pressures. BUT, the key word here is "TUNING". Boost is more forgiving as you can tune down the boost and it's not "instantaneous". But with nitrous, you'll have to be extra careful to inject the EXACT amount of fuel/nitrous, especially @ 150+shot. Personally, I feel turbo is the safer way (and cheaper overall) to extract HP.
Anyways, to answer your questions, the problem won't be in the 90mm bore itself....but in the headgasket. With less deck area, you'll need to keep an eye on sealing it properly. If you plan on resleeving it anyways with new sleeves, stick with the stock bore. Whatever displacement you lose against a 90mm bore, will be gained by being able to boost higher, or run higher nitrous jets.
Forged pistons can handle alot of abuse, be it from turbo boost or nitrous pressures. BUT, the key word here is "TUNING". Boost is more forgiving as you can tune down the boost and it's not "instantaneous". But with nitrous, you'll have to be extra careful to inject the EXACT amount of fuel/nitrous, especially @ 150+shot. Personally, I feel turbo is the safer way (and cheaper overall) to extract HP.
Re: need some help/info on sleeved blocks! (Prelude_RCR)
i dont quite get it eathier, he said he had to have the block "cut"(his words i guess he means bored) to fit the sleeves in it, but stopped the guy from putting the sleeves in it cause he ran out of money. if possible i was going to go w/like 88mm or so sleeves.
btw- this is a pre-96 h22, so its closed deck if that matters. and what is the stock bore?
btw- this is a pre-96 h22, so its closed deck if that matters. and what is the stock bore?
Thread
Thread Starter
Forum
Replies
Last Post
ek9tl
Honda Civic / Del Sol (1992 - 2000)
2
May 11, 2007 02:50 PM