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yet another HMT rex

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Old 06-21-2009, 09:43 PM
  #11  
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Originally Posted by Bulletman
Since i know that ppl with a d15 non vtec buy a y8/z6 ect vtec head to raise the comp, My question would be is that i have a d16y7(2000 civ block) if i were to get a y8 head.. would it raise the comp?

i really dont want to raise my comp but at the same time i know y8 heads do flow better.
most people do that just to get the "extra 25hp" from "vtec". sure it might flow better but what kind of power are you looking to put down. being as you have a stock bottom end, it will max out at 200-220 before you start breaking stuff. you can do that with that turbo you have easily. in my opinion i rather keep the non vtec head on a single cam. but if you want to put that head on there why not throw some rods and vitaras while you are at it? then lay down some better numbers.
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Old 06-21-2009, 11:25 PM
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ok you make a point, if i ever rip the head off, it will be to rebuild the engine for more boost,

im looking to make 200out of it, first gear max boost at redline is about 5psi, second hits 8 pounds around 3.5-4k ish rpm. Im trying to figure out how to get it to spool up quicker, i already checked my cold piping 3times to see if its leaking boost, i need some insight on troubleshooting this ----
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Old 06-22-2009, 07:38 PM
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Originally Posted by Bulletman
ok you make a point, if i ever rip the head off, it will be to rebuild the engine for more boost,

im looking to make 200out of it, first gear max boost at redline is about 5psi, second hits 8 pounds around 3.5-4k ish rpm. Im trying to figure out how to get it to spool up quicker, i already checked my cold piping 3times to see if its leaking boost, i need some insight on troubleshooting this ----
most of that lag will get better with a tune. also a free flowing exhaust, 2.25" all the way back should be plenty for the power you want to make.
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Old 07-22-2009, 04:56 PM
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im having problem with my 270cc injectors.. one of them is not working properly..

i just mustered money out of my *** for a tunable chip... and im wondering if the stock injectors would hold up 8psi or not? any input would be great...
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Old 07-23-2009, 11:52 AM
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this makes me miss my old rex, gl gettin it fixed and tuned
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Old 07-24-2009, 09:14 PM
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Originally Posted by B18hybridhatch
this makes me miss my old rex, gl gettin it fixed and tuned
I'm about to scout the local wreckers tomorrow morning in hopes i find myself another set...
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Old 07-24-2009, 10:03 PM
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If it were me I'd get a set of 390cc injectors AT LEAST. I'd definately rather have too much than not enough if you know what I mean. Get a set of injectors from a 89 Dodge Colt GT turbo or a 90-94 Eclipse turbo automatic (390cc) or manual (450cc). Trust me when you get a tune they'll tell you to upgrade the injectors. This makes me miss my 89 CRX too...
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Old 07-30-2009, 11:34 PM
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I would agree with ^^^.
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Old 07-30-2009, 11:39 PM
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You can go with DSM 550's.

I got a set for my build for under 100 dollars.
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Old 08-02-2009, 05:48 PM
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well i spent the whole last week looking for some 450cc's or anything else i could get my hands on that was cheap.. finally tomorrow hopefully i will get a set of dsm's i found them on kijiji.ca for a 100 smackers,


Last night i ended up going to the track by using my stock civic injectors, i waited long enough to build it and couldnt resist not going. Just as i get to the track my wastegate connector to the flapper of the exhaust decided to loosen itself and fall off on the way there So without knowing this(me being stupid and not glancing at my boost gage) i ran 15.77 with 0boost.. lol...
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