Big O

Is this a realistic setup? 4.73 and boost anywhere from 4psi to 12 psi? I'm using a D series motor. I wanna do this on a 4dr 88-91 civic with lsd and use this as a street/drag setup. Is this too radical a final drive for boost? I searched the final drive and boost but all I found was hydraulic tranny tegs or swapped civics with b series and hydraulic trannys. Didn't yeild definitive results.
thx

uncleben'sspanishrice

boost will absolutely not work with this gear, you must have the 4.11 final drive JDM in order make any more boost.

If you do run boost, be damn sure you dont run an intercooler, blow off, or waste gate. Running these with your final drive would certainly result in catostrophic destruction of your dog teeth

displacementownsjoow

BUT if you gun blinker fluid injection, you should be fine.

Big O

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by displacementownsjoow &raquo;</TD></TR><TR><TD CLASS="quote">BUT if you gun blinker fluid injection, you should be fine. </TD></TR></TABLE>
you mean like water injection into the intake manifold? or ?
I'm not sure what you mean? sorry could you explain?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by uncleben'sspanishrice &raquo;</TD></TR><TR><TD CLASS="quote">boost will absolutely not work with this gear, you must have the 4.11 final drive JDM in order make any more boost.

If you do run boost, be damn sure you dont run an intercooler, blow off, or waste gate. Running these with your final drive would certainly result in catostrophic destruction of your dog teeth</TD></TR></TABLE>
thx, for the response, waht if I just use low boost like 4-6 psi, will that help?

jeremy.

yeah from what i've been hearing your going to have no traction whats so ever with this final drive.........but do go with the blinker fluid....green fluid work the best


Modified by ek_jeremy at 2:53 AM 4/13/2004

uncleben'sspanishrice

umm, dont take anything serious that me or the blinker fluid guy just said, we were just ****** with ya.

You will just get to that speed that your final drive allows quicker. That is all. Unless the tranny is weaker, the ratio itself does not matter. You will have traction issues with that low a final drive, but you will with any turbo FWD.

Akiraboy

I thought gsr's & type r's had 4.7 & 4.9 final drives? IMO, the type R tranny is a damn good street/drag tranny. These owners still run boost.
He's using a LSD. I know this is like comparing apples & oranges but is it really that bad?

grndcont

na, gsr's are 4.40's.

philipwight

i use a us type r tranny with my boosted civic and it took me to a 12.3@116. With 24 inch tires i was hitting rev limiter in 4th gear(8500).

philip

Kataku2K3

We run aftermarket FD's on our high boost B series motors but that's really only necessary when you're running big slicks on a street car. The main reason we upgrade is for strength but we've still destroyed ProDrive countershafts/ring gears with 700whp+. With less boost/power there's no need to run really tall slicks or need the extra rigidity so I would probably just stick with factory gearing. Just my $0.02 tho

Akiraboy

Will big o's setup outrun a normal setup?