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LAST EDITED ON 26-Feb-01 AT 10:15 AM (PST) >1-how relevant is engine mileage to
>a boosted motor? im at
>82K now and just got
>the new cylinder head and
>4 valves replaced at 81K.
>should that stop me from
>going turbo?
It's very relevant, of course. Taking on over 50% extra power on a car not intended from stock to recieve it, is going to be dramatic. 82k difers a LOT from car to car, driver to driver. Like many here have recommended, do the compression test. Also, make sure you don't have any oil leaks. The compression will go lower and oil will leak in ANY CAR eventually, I think. (maybe at 50k for some cars and 300,000k for others) Should it stop you? It all depends...if your compression is lower or borderline bad, I would invest my money in redoing my gaskets and seals first...possibly your internals as well. Then going turbo. It's all order-oriented and is all according to NEED. You can ALWAYS go turbo. 
>2-have any of you guys run
>0-60 times in your turbo
>cars?
No, not me...
i have seen the
>quarter mile times listed over
>and over, but im more
>interested in 0-60 times now
>and most importantly, what boost
>were you running when you
>got those times? i managed
>roughly an 8.8 with just
>an intake and muffler using
>a gradual launch cause i
>didnt want to burn tire
>or dump the clutch.so im
>curious if a turbo can
>cut more than 2 seconds
>from that.
All I can say is I can be even 2 or 3 cars behind a stock RS and I close REAL FAST and pass when he's at full throttle and I'm at 3/4 throttle. It's a HUGE difference man...
>3-if i get bad results from
>a compression test (what are
>bad numbers) should i not
>go turbo? what are the
>dangers of low/unequal compression if
>i turbo it? can low
>compression be fixed?
Yes, just like I said above. You just need to rebuild your engine. Get all those nice seals, gaskets and so forth and mayb go the extra distance with the upgraded internals. So long as your block is solid, you're okay. After you do that, you can recheck your compression and you should be back at stock levels or maybe a bit lower if you go upgraded, lower compression internals.
>4-would a cold air extension on
>the compressors intake be of
>any advantage to an intercooled
>turbo or would cooling the
>air before it enters the
>intercooler just reduce the actual
>work the intercooler performs (thus
>making it less necessary to
>run higher boost)?
Sure, 4g63 guys use cold air intakes as well. I agree with your assumption that it would lessen the amount of work your intercooler would have to endure to bring temps down to ambient air temperatures. Lowering Intake Air Temps allows you to run higher boost as the lower temps stave off detonation.
>5-when considering the star vs. hrc
>turbos the question of daily
>driven power came to mind...where
>do you guys shift in
>daily driving? i read that
>the T3/T04 getting power at
>3300 may be less useful
>in daily driving, but i
>shift at 3500-4000 daily anyways
>so what is the basis
>for this statement? id rather
>have that added high end
>power from the star kit.
I wouldn't NOT choose STAR for fear of slow spool-up speed. That was my fear initially, but it's not anymore. If you're at full spool-up at 3300 with STAR, that's plenty fine. It's all throttle position anyhow, not so much RPM level. NEITHER of these turbos will experience boost drop-off though. Both have their power ranges in the mid-to-high RPM's.
A "different" quick spool up turbo would be a T-25 or T-28. Neither the T04/03 or S-16g are OEM-type fast spool-up turbos. Those factory turbo usually spool up ridiculously fast but run out of steam at about 5000+ rpms. That's because most drivers never have their rpms there, but under 4000 rpms. Factory turbo are intended to make power then.
>
>6-how many here actually have the
>star kit besides wyatt? stage
>one or two? do you
>ever see boost during daily
>driving?
No STAR here of course. But daily driving...damn yes! How could I not. For my turbo, I can avoid spooling up, but it's damn hard. I have to feather the throttle and stay below 3500 rpm's. Typically, I don't go full boost, but somewhere near 2-3 psi without even trying. Just enjoyable brisk driving.
>7-what kind of maintenance is needed
>on a turbo that is
>not required on NA motors?
>i know about cool-downs, do
>you guys use TT's, let
>the motor idle yourself, or
>just not cool-down at all?
>
I don't have a TT. I have so many other toys I buy, I really don't have a spare 100 to throw at a TT. However, I do always cool down. I typically always wait about 30 seconds to a minute. I'll cool down longer when I've really pushed it. The EGT gives me a great frame of reference as I wait for those temps to drop lower than 950 degrees or so. I do a ton of other maintenance that I've talked about in numerous other posts. Check all your lines and oil(SYNTHETIC) all the time basically. Also keep an eye on fuel pressure. Watch your egt's and A/f meter as well. You should know all this though.
>8-what clutches are you guys using
>
Stock. holds perfect.
>9-and finally, does a turbo place
>extra wear on the tranny?
HRC still uses stock tranny at over 400 horses.
New clutch though.
Jason
98' Eagle Talon ESi-T
Mitsu Super 16g Turbo(HRC)
http://springfielddsm.homestead.com/JasonsPics.html
_____________________________________
Jason ESi-T
04' BMW 325Ci
91' Nissan 240SX
98' Eagle Talon ESi (sold)
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