Inside polars 2.5 pics FYI - Page 6 - Perth-WRX.com

MKVIGTI · #51 13-06-2007, 06:05 PM

Quote:

Originally Posted by POLARBEAR666

LOL My car got a 13.4 and the bug got a mid 14. Not too bad for my first pass at the drags and a 6 speed which requires 5 gearchanges.

A 13.4 I'm guessing you made it to 5th gear. Thats 4 gear "changes" by me. ( sorry to be pedantic. )

Thankfully the 06 has taller cogs. still holding 4th for 180 but any quicker and I would be stuffed. Rev limiter can't be far away

POLARBEAR666 · #52 13-06-2007, 07:43 PM

I was in 6th when I went over finish line. car just kept running out of puff in the top end due to all the mechanical probs i had. so yeh 5 gearchanges.

jEstEr? · #53 13-06-2007, 08:36 PM

saw your heads tonight simon, tempted to take a photo with my DSLR, but figured your phone cam pics were good enough

wai · #54 13-06-2007, 08:48 PM

Quote:

Originally Posted by trainwrex

cool thatll be my next mod, when the engine gets built..

i think you should be going for high volume pump from JUN. cosworth one is just high pressure.

btw nice and clean heads polarbear..saw them as well yesterday while droping off the mxl dash. why not 278 cams?

trainwrex · #55 13-06-2007, 08:54 PM

Quote:

Originally Posted by wai

i think you should be going for high volume pump from JUN. cosworth one is just high pressure.

btw nice and clean heads polarbear..saw them as well yesterday while droping off the mxl dash. why not 278 cams?

Ah i c thanks wai, have u got a jun item? if so what is the costing?

wai · #56 13-06-2007, 08:58 PM

Quote:

Originally Posted by trainwrex

Ah i c thanks wai, have u got a jun item? if so what is the costing?

yea i have got JUN for that reason. cost just over $1000 nengun.com

POLARBEAR666 · #57 13-06-2007, 09:13 PM

From my understanding the Cosworth is not that much more high pressure than stock but just makes sure that pressure is held at high rpm. So I don't see how its much diff to the JUN? Cosworth say they increase oil gallery size also?

COSWORTH:
"Each pump is disassembled and inspected. Oil galleys are then honed to ensure unobstructed flow. We then incorporate a modified pressure relief valve to maintain pressure stability throughout the rpm range. Note: Flow rate is unchanged. This is an essential item on any high performance engine."

JUN:
"JUN developed High flow oil pumps for the engine which may become lack of oil quantity when high revolution. With a tuning engine overusing high revolution, lack of oil becomes a serious problem. We designed new gears in the oil pumps to increase flowing oil quantity. Use our oil pump before the trouble occurred around turbines or crank."

I think either way is a huge improvement but I will go with Cosworth myself. I mean after all JUN gets its piston blanks from Cosworth so we know who is the greater machine part maker.

wai · #58 13-06-2007, 09:39 PM

product description lack specs but either way i was advised to get JUN instead of Cosworth for my application, others might differ. But hey, is Cosworth it still be alot better then stock.

mr_psi · #59 13-06-2007, 10:23 PM

its just an oil pump. whats the worth thing that can happen if it fails? :P

DarkMoose · #60 13-06-2007, 10:37 PM

Google it