chrisz232 Posted December 12, 2008 Share Posted December 12, 2008 alright guys, there are 3 dif kinds of b20's maybe more actually and i need to know which one is the right one to get. i am doing a b20 turbo project the very beg, of next year. but i read somewhere that one of the b20 blocks holds up really well. now i know alot of u r thinking dude b20 turbo-bad idea. NO ITS NOT. my buddies running a b20 turbo with a full race kit pushing 7 PSI and running almost 300 to the ground. so yea its a good idea. o and hes never had probs. but i need to know if u guys know which would be the best for boost or which would be a bad idea. Link to comment Share on other sites More sharing options...
CleanGSR Posted December 12, 2008 Share Posted December 12, 2008 Not meaning to sound like a jerk, but if your buddy has a B20 turbo w/ 300whp, then why didn't you just ask him? I'm sure he would know (as he has one) as well or better than anybody here who doesn't have a boosted B20. Link to comment Share on other sites More sharing options...
Kastigir Posted December 12, 2008 Share Posted December 12, 2008 The B20Z has a great CR for boost. The word is that the B-series blocks, especially the 20s will need sleeved to be boosted. Link to comment Share on other sites More sharing options...
..SSR.. Posted December 12, 2008 Share Posted December 12, 2008 Doesn't matter which you run. Link to comment Share on other sites More sharing options...
Kastigir Posted December 12, 2008 Share Posted December 12, 2008 I'm sorry, it's the B20B that has a good CR for boost. 8.8:1 Link to comment Share on other sites More sharing options...
..SSR.. Posted December 12, 2008 Share Posted December 12, 2008 You guys know its not the compression ratio on a stock bottom end that matters right? Link to comment Share on other sites More sharing options...
CleanGSR Posted December 12, 2008 Share Posted December 12, 2008 You guys know its not the compression ratio on a stock bottom end that matters right? I do. A B18C1 has a higher CR than a B20B and would hold more boost before breaking. Link to comment Share on other sites More sharing options...
Kastigir Posted December 13, 2008 Share Posted December 13, 2008 I know a lower CR makes it easier to tune for boost. A B-series is pretty much going to have to be built anyway, when you start talking about big HP numbers. Link to comment Share on other sites More sharing options...
chrisz232 Posted December 14, 2008 Author Share Posted December 14, 2008 well i asked him and he said hes honestly not sure he just bout the b20 and put it in his car. yea thats what i was looking at was the b20B i saw the comp was 8.8:1 and i figured thatd be best to put in there. i was looking at blockgaurds then i asked him what he had done internally and if he was running a blockgaurd. he told me no internals and no blockgaurd. hes just running a b20 with a full race kit and a GT25R turbo. so... i mean i guess the b20B is what ima have to go for. i found one for cheap so theres my motor and answer. Link to comment Share on other sites More sharing options...
Kastigir Posted December 14, 2008 Share Posted December 14, 2008 well i asked him and he said hes honestly not sure he just bout the b20 and put it in his car. yea thats what i was looking at was the b20B i saw the comp was 8.8:1 and i figured thatd be best to put in there. i was looking at blockgaurds then i asked him what he had done internally and if he was running a blockgaurd. he told me no internals and no blockgaurd. hes just running a b20 with a full race kit and a GT25R turbo. so... i mean i guess the b20B is what ima have to go for. i found one for cheap so theres my motor and answer. Without a blockguard, that engine is not long for this world. Link to comment Share on other sites More sharing options...
chrisz232 Posted December 14, 2008 Author Share Posted December 14, 2008 alright. well ill put that on my list of things to get then. i know there not too expensive i found some on ebay for like 70 bucks. so i can handle that. now my only prob is findind somebody to tune it cause the guy that was going to died in his sleep last week. so now i gotta get it towed somewhere cause im not sure of anywhere close by. Link to comment Share on other sites More sharing options...
..SSR.. Posted December 14, 2008 Share Posted December 14, 2008 An improperly installed block guard is worse than none at all. Link to comment Share on other sites More sharing options...
chrisz232 Posted December 15, 2008 Author Share Posted December 15, 2008 Iight ill have to keep that in mind. is it something easy to install? Link to comment Share on other sites More sharing options...
IVhorsemenmotorsports Posted December 15, 2008 Share Posted December 15, 2008 either the b20b or b20z can be used for boost. low boost. if you have a good tuner and a set amount of boost you want to run example 10 psi.... i would go with the b20z for the added compression. it will help with spool a little quicker. otherwise go with the b20b which is more easier to obtain. as far as the block guards are concerned, i do not install one unless i am boring the block out. when installing the block guard it distorts the cylinder where it is places causing issues with cracked sleeves, broken rings, and collasped pistons. The b20 has a weaker sleeve than any of the b18's cause of the siamesed sleeves where the b18's. if i was building a turbo street car on street tires i would use a b16... just my opinion Link to comment Share on other sites More sharing options...
chrisz232 Posted December 15, 2008 Author Share Posted December 15, 2008 Yeah ima be running 10 psi as soon as i get it tuned ima try and run no more then 5 if i can get it tuned near by if not i gotta get it towed. but it will be tuned at 10. so i guess i should the the Z instead of the B. Link to comment Share on other sites More sharing options...
..SSR.. Posted December 15, 2008 Share Posted December 15, 2008 It does not matter which you use. Block guard needs to be installed by a good machine shop. Link to comment Share on other sites More sharing options...
chrisz232 Posted December 15, 2008 Author Share Posted December 15, 2008 okay. is there anyway i can find a good machine shop in my area? (phone book, internet, etc) Link to comment Share on other sites More sharing options...
..SSR.. Posted December 15, 2008 Share Posted December 15, 2008 Ask around. Then when you hear of a good one, ask them for references. Link to comment Share on other sites More sharing options...
chrisz232 Posted December 16, 2008 Author Share Posted December 16, 2008 okay yea ill do that then. i still gotta find a tuning shop tho. cause the guy died that was supposed to do mine.... Link to comment Share on other sites More sharing options...
IVhorsemenmotorsports Posted December 16, 2008 Share Posted December 16, 2008 as far as the block guard goes... don't install one unless you plan on boring out the block. you will regret it Link to comment Share on other sites More sharing options...
chrisz232 Posted December 16, 2008 Author Share Posted December 16, 2008 nah im not doing any boring. the BLOCK is staying the same. eventually there will be a vtec head on it and some headwork. but im not touching the block. y do u say its a bad idea? Link to comment Share on other sites More sharing options...
..SSR.. Posted December 16, 2008 Share Posted December 16, 2008 It distorts the cylinders when installed. Don't put a VTEC head on it if you're not touching the bottom end. Link to comment Share on other sites More sharing options...
chrisz232 Posted December 16, 2008 Author Share Posted December 16, 2008 okay well i guess ill build the b20 itself for boost and just lower comp pistons and maybe turbo built cams. and stay with a b20 turbo and not vtec it. Link to comment Share on other sites More sharing options...
..SSR.. Posted December 17, 2008 Share Posted December 17, 2008 If you're going to build the bottom end, then put a VTEC head on it. Link to comment Share on other sites More sharing options...
chrisz232 Posted December 17, 2008 Author Share Posted December 17, 2008 okay so as long as i build the bottem end then im good okay cool. do i have to run a block gaurd if put a vtec head on it? Link to comment Share on other sites More sharing options...
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