Announcement

**Silver2000V6** · 05-01-2002, 11:44 PM

Since Ryan isn't going to be keeping up with the board too much anymore, maybe it would be better if you sent this out to the beta testers and Ryan via email. I think that's where us betas are getting our news now.

**BATMAN** · 05-02-2002, 08:35 AM

Actually this is the only forum i have "permission" to post too :rolleyes:

Bill will be signing on sometime today or tommorrow to answer everyone's questions. So start posting them away [img]smile.gif[/img]

**John_D.** · 05-02-2002, 12:28 PM

Here's my list (so far...)

1. Do we need new fuel injectors? (already asked, but I didn't want to have to re-number all my questions...)

2. What plugs, and plug gap, are recommended?

3. Does anything need to be done to existing vacuum hoses to keep from blowing them off their fittings? Little clamps, glue, new hoses?

4. Will the power brakes, and other vacuum controlled accessories (hvac controls, cruise control, etc.) still work if boosting down the highway? Do we need an additional vacuum canister?

4a. How much boost will be present (if any) under ummm, moderate interstate speeds like say 80-90 mph, including hill climbing conditions.

5. Will the new intake tubing mate up to the oval outlet on the stock '98 airbox, or is a new lid (whisper, etc.) with a round opening required?

6. Does the MAF screen stay or go? Does it matter? Do we know yet?

7. Does the stock computer know how to handle a boost reading rather than a vacuum reading? Will it set an SES light? The PCM still keeps correct mixture and timing at part throttle (closed loop using o2 sensors), or only at WOT (open loop ignoring sensors)?

8. Does the intercooler have/need ducting to provide fresh air across it to perform effectively? Where is the recommended source of the fresh air for this kit (grille, foglight, under car)?

9. Is 91 octane required at all times, or just for racing? How much Octane Boost or similar product to bring a tank of regular gas up to 91? (I might want to run regular for daily driving/no-boost -- if I can stay out of it -- and only bring the octane up for a day at the track)

10. If I only want to hook up the supercharger for racing, can I just swap a shorter belt on, and this would adequately bypass the supercharger during the week? (don't know that I would want to, just curious at the moment... It would have some advantages: better mpg in daily driving, less wear on the s/c bearings over thousands of miles of driving, no need for the 91 octane in daily driving) Or do I also have to duct around the s/c so it doesn't block the air flow when it's not spinning?

11. Does the supercharger head unit have to be rebuilt periodically? How often? (miles and/or days)

12. Is a 160 or a 180 thermostat better for this package? Overall, the 160 would be better I suppose, for lower temperature, but I still hear rumblings that our computers do NOT optimize settings below 170, due to going into open loop mode. I have the stock 195, and a 180 sitting on the shelf ready to go.

13. Does the IAT sensor get relocated into the boosted section of the intake, to read the true air temp the engine will see? And will it hold up to a couple hundred degrees for extended periods of time? Will it trip an SES by reading such a high temp? Or do we just let it see the outside air temp?

14. About the belt -- is it stock, or wider? Does the kit use a second belt on a second pulley? Does it run on the ribbed side?

15. Is the PCV plumbed any differently than stock?

16. I hear there are advantages to combining nitrous with supercharging or turbocharging. Less prone to detonation, due to the cooling effect. Any feedback on whether this is the case? And whether the cooling effect is more effective injecting before or after the intercooler? Before or after the s/c?

17. Possible disadvantages to combining nitrous and supercharging...? More hp at the same rpms, which means more stress on the engine, in particular the pistons, rings, ring lands, head gasket. Suggested limits on the nitrous shot? I would think 50-85. Is the cooling effect sufficient with a 50 shot to even bother with installing it?

18. Advanced question. Alcohol injection like the GN guys use. Is this equally helpful for supercharging? Recommended injection point in the intake tract?

"edit - added 16-18..."

[ May 02, 2002: Message edited by: John_D. ]

**BATMAN** · 05-02-2002, 01:31 PM

LOL JOHN!!!! There are enough questions there for an episode of "Who Wants to be a Millionaire" [img]smile.gif[/img]

**John_D.** · 05-02-2002, 02:09 PM

Hey, what can I say, enquiring minds want to know. [img]smile.gif[/img]

Especially if I need to buy more parts...

I bet you asked a bunch of questions like this already?! You did get a little bit of a head start on the rest of us!

**strobhen** · 05-04-2002, 12:18 AM

I can answer some of your nitrous ?'s

First off, you would most definitely want to inject after the supercharger & intercooler. The kinda heat that will be present in that charger isn't a good mix w/ nitrous.

Second, I wouldn't do it personally, just seems like a lot of stress on the engine.

Look into alcohol/water cooling. A lot of GN guys get 5+ psi from adding that to an already good setup.

Alcohol as in rubbing alcohol, so cheaper & easier to maintain than nitrous. Doesn't add much power on its own, but cools the air quite a bit.

**daWhoady** · 05-04-2002, 01:12 AM

Nice thing about alcohol injection is that you can turn up your boost safely since it cools the compressed air so much. And the alcohol is readily available as stated. The only problem is you have to keep an eye on how much you have. If your tank runs out and you are still running high boost, thats when you damage your engine.

**StockV6Cam** · 05-04-2002, 04:19 AM

Well I'm no official on the supercharging project, but let me answer what I can with my forced induction knowledge.

<blockquote>quote:<hr>Originally posted by John_D.:
1. Do we need new fuel injectors? (already asked, but I didn't want to have to re-number all my questions...)<hr></blockquote>

I would definitely suggest bigger injectors if boosting over 10psi. At that boost level I would at least recomend a bigger fuel pump and a fully adjustable FMU.

<blockquote>quote:<hr>4a. How much boost will be present (if any) under ummm, moderate interstate speeds like say 80-90 mph, including hill climbing conditions.<hr></blockquote>

This is a good question. On a supercharged application it is very responsive to what the engine rpms are. Considering at 80mph I'm less than 2500rpm I would think you wouldn't be under much if any boost at all.

<blockquote>quote:<hr>7. Does the stock computer know how to handle a boost reading rather than a vacuum reading? Will it set an SES light? The PCM still keeps correct mixture and timing at part throttle (closed loop using o2 sensors), or only at WOT (open loop ignoring sensors)?<hr></blockquote>

Well actually it's the fuel pressure regulator that manages fuel levels. If you get a fully adjustable FMU you can use calibration discs so that you can run say 9psi of extra fuel for every pound of boost that's being built up. Tuning your FMU will be #1 thing to do.

<blockquote>quote:<hr>8. Does the intercooler have/need ducting to provide fresh air across it to perform effectively? Where is the recommended source of the fresh air for this kit (grille, foglight, under car)?<hr></blockquote>

Personally right now I'm putting my IC's (I have two) in front of the engine by the fans for now. Soon after I'm going twin inlet single outlet intercooler sitting above the radiator with the SLP Ultra Z hood cooling it. That should make for a nice cold IC! :D

<blockquote>quote:<hr>9. Is 91 octane required at all times, or just for racing? How much Octane Boost or similar product to bring a tank of regular gas up to 91? (I might want to run regular for daily driving/no-boost -- if I can stay out of it -- and only bring the octane up for a day at the track)<hr></blockquote>

I hope to God you have 93 octane by you. That would definitely be suggested. If you only have 91, you better make sure you run some octane booster with it.

<blockquote>quote:<hr>10. If I only want to hook up the supercharger for racing, can I just swap a shorter belt on, and this would adequately bypass the supercharger during the week? (don't know that I would want to, just curious at the moment... It would have some advantages: better mpg in daily driving, less wear on the s/c bearings over thousands of miles of driving, no need for the 91 octane in daily driving) Or do I also have to duct around the s/c so it doesn't block the air flow when it's not spinning?<hr></blockquote>

The compressor blades will block the airflow. There are ways of wiring an on/off switch for turbo's or super's although they're quite intracate and I don't think they're worth the time. There was a question about this on CamaroZ28.com not too long ago.
http://web.camaross.com/bb/Forum2/HTML/007639.html

<blockquote>quote:<hr>11. Does the supercharger head unit have to be rebuilt periodically? How often? (miles and/or days)<hr></blockquote>

This I can't answer with 100% certainty but I would think it would be ok for quite a while as long as you add oil every 6,000 miles like they suggest. That's what I like about having my oil lines tapped is that I don't have to worry about constantly adding more oil.

<blockquote>quote:<hr>13. Does the IAT sensor get relocated into the boosted section of the intake, to read the true air temp the engine will see? And will it hold up to a couple hundred degrees for extended periods of time? Will it trip an SES by reading such a high temp? Or do we just let it see the outside air temp?<hr></blockquote>

This even I would like to know.

<blockquote>quote:<hr>16. I hear there are advantages to combining nitrous with supercharging or turbocharging. Less prone to detonation, due to the cooling effect. Any feedback on whether this is the case? And whether the cooling effect is more effective injecting before or after the intercooler? Before or after the s/c?<hr></blockquote>

I would like previously mentioned do an alcohol injection type setup. The nitrous would just add even more stress to the engine.

<blockquote>quote:<hr>17. Possible disadvantages to combining nitrous and supercharging...? More hp at the same rpms, which means more stress on the engine, in particular the pistons, rings, ring lands, head gasket. Suggested limits on the nitrous shot? I would think 50-85. Is the cooling effect sufficient with a 50 shot to even bother with installing it?<hr></blockquote>

If anything I would go with a 50 shot. It would cool the air and probably give you more than 50hp.

[ May 04, 2002: Message edited by: StockV6Cam ]

**John_D.** · 05-04-2002, 01:05 PM

I just reread this, and the last part of it sunk in...
"Personally right now I'm putting my IC's (I have two) in front of the engine by the fans for now. Soon after I'm going twin inlet single outlet intercooler sitting above the radiator with the SLP Ultra Z hood cooling it. That should make for a nice cold IC!"

Great idea, using the ram air hood to duct to the intercooler!

I am thinking about pulling one duct off the closest grill opening, if the kit doesn't come with anything for this.

**StockV6Cam** · 05-04-2002, 05:21 PM

Yep thanks, I thought it was quite the original idea. Here's the hood I'm using.

http://www.ilstu.edu/~cmkelly/UltraZHood.jpg

I was also thinking about pulling off the radiator shroud and allowing the air that gets scooped up to hit the IC as well so it would be cooled from both sides.

**John_D.** · 05-08-2002, 08:39 PM

If Bill doesn't get on here and start answering some questions (the answers will keep occupied for a little bit...), I'm liable to start thinking up some more stuff to add to the 19 other questions I already stuck out here... [img]smile.gif[/img]

Batman, I hope everything is going good for you and yours, (and your car).

**John_D.** · 05-18-2002, 11:54 PM

I guess I'm official now, I got my receipt!!!
:D

Did everyone else get theirs yet?

**Patrick Javert** · 05-19-2002, 10:04 PM

For commuting, I'd suggest getting an adjustable blow-off valve. have it set for 0 during normal driving, and set at or above whatever boost you wanna run while racing.

**TheBeast** · 05-19-2002, 11:44 PM

<blockquote>quote:<hr>Originally posted by John_D.:
I guess I'm official now, I got my receipt!!!
:D

Did everyone else get theirs yet?<hr></blockquote>

I'm gonna go back up to College Station sometime this week to tidy up and check the mail, so I'll see if I got mine!

:D

What are all you other beta testers up to? I'm busy working 40 hr. weeks to pay for this thing! :D Everything is goin smooooooth...

[ May 20, 2002: Message edited by: TheBeast ]

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