aba block (2.0) with what head?

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aba block (2.0) with what head?

Post by Guest »

I was told by a performance shop in jersey (hodis performance) that i should do an 8v head with a 16 v bottom end (i beleive) and i can basically boost the sh!t out of it....can anyone here give me some more information.
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Post by PDX Cabby »

8v bottom ends (1.8 & 2.0) combined with a 16v head (1.8 or 2.0) make a great low compresstion motor primed and ready for boost

the combination will give you approx 7.8:1 compression. With the right intercooling that means you can get A LOT of boost

however
there is one thing to look out for: Valve Clearance.
the combination gives you an extremely thin valve/piston clearance. Less than a full millimeter if i remember correctly. This can be easily resolved by having a machineshop knotch the 8v pistons to give you added clearance. This will also slightly lower your compression just a hair more.
85 Cab - 1.9L 8v, g-grind, euro dual downs to TT race w/ Borla, VWMS fuel dizzy, 2H tranny with 5th gear swap, TT short shift, FK 60/40, 15" BBS RA, rear disks... begging for boost...
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Post by sixsracing »

PDX answered your question indirectly. If I'm reading this right, your question was should you use an 8v head on a 16v block. PDX is telling you no. You should use a 16v head on an 8v block and have a competent machine shop notch the pistons for valve clearance.
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Post by guest »

the performance shop sed to take the bottom end from an 8v 2.0 (from like a 93 golf) and match it with the 8v head from the cabby then boost the doo doo out of it. just needed some clarification.
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Post by sixsracing »

I believe that's a very similar setup to what PDX is running. I'm not sure the compression ration will be low enough to handle the boost that you are talking about without grenading. PDX, you out there?
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Post by PDX Cabby »

oh
whoops
i didn't read correctly

DO NOT BOOST A 16V BOTTOM END WITH AN 8V HEAD!!

the resulting combination of those two will put you at approx 12.5:1 compression

way too high for boost or pump gas

but it is a good way to get a powerful NATURALLY ASPIRATED 8v

but, you should boost the hell out of an 8v bottom end with a 16v head, infact, you'd want to so you can get some of the power back
85 Cab - 1.9L 8v, g-grind, euro dual downs to TT race w/ Borla, VWMS fuel dizzy, 2H tranny with 5th gear swap, TT short shift, FK 60/40, 15" BBS RA, rear disks... begging for boost...
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Post by sixsracing »

I knew there was a communication breakdown there someplace.
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Post by turbo_cabby »

sorry for the inconveince...i was unaware i wasn't singned in....this post has moved lol
:oops: viewtopic.php?p=3664#3664
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Post by kuklaki »

BTW, take any of those "Vortex Rules" and throw them out the window here. No need to apologize for not signing in or not doing a search, this is a very small forum with a group of friendly folks.
This forum can be dead at times-being only for one type of car limits the user base, but I rather like it that way :D
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Post by sixsracing »

Seconded!
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Post by turbo_cabby »

kuklaki wrote:BTW, take any of those "Vortex Rules" and throw them out the window here. No need to apologize for not signing in or not doing a search, this is a very small forum with a group of friendly folks.
This forum can be dead at times-being only for one type of car limits the user base, but I rather like it that way :D

i guess that's what happens when normal people run a forum... 8)
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Post by Calimus »

Normal???? no one here is normal. We are all very sick people that have an uncureable case of A1 fever. :twisted:
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Post by turbo_cabby »

Calimus wrote:Normal???? no one here is normal. We are all very sick people that have an uncureable case of A1 fever. :twisted:
SWEET...i guess im going to slowly catch that one...but HEY ....well worth it :D
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Post by CalAltaDubber »

turbo_cabby wrote:
Calimus wrote:Normal???? no one here is normal. We are all very sick people that have an uncureable case of A1 fever. :twisted:
SWEET...i guess im going to slowly catch that one...but HEY ....well worth it :D
Just remember "We are the people our mothers warned us about". :lol: 8) :lol:
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Post by turbo_cabby »

Just remember "We are the people our mothers warned us about". :lol: 8) :lol: [/quote]


awesome...its ok my mom doesn't like me neways....i spend too much time "throwing my money away at the track" 8) <----i thought that was the cool thing to do?
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