Is it possible to spool a turbo too fast?

[Turbo6Smackdown]

Anyone know? Any downsides to this?

 

[TURBOTOMZ]

Yeah, excessive wear on rear tires!!

 

[Turbo6Smackdown]

I was just wondering since ive never seen anyone with all the bells and whistles, but with a stock turbo. Would it spool soo fast, that you would need a taller tire, or gear?

 

[Blazer406]

IMHO.... the only way to spool "too" fast... would be if the torque hit made the tires spin.... other than that.... no... it is impossible to spool too fast.... IMHO....

I could see an argument that a really quick spooling turbo was great at the track... but too fast on the street.... it would be either.... steady slow acceleration... or frying the tires.... no in-between... this would only be fun for a very short time... then I would prefer a more controlled spoolup.

At the track... on sticky tires..... bring it on....

 

[Brer Rabbit]

I thought the same thing,

I was just wondering since ive never seen anyone with all the bells and whistles, but with a stock turbo. Would it spool soo fast, that you would need a taller tire, or gear?

Which is why I went to a higher gear--3.08. Unfortunately I hurt the headgaskets on the first pass at Byron a few weeeks ago to test my theory, but I felt that before the change my car was spooling so fast with the 6776BB that it was going thru 1st and 2nd gear way too fast causing 3rd to really spin high before getting thru the end of the track, even with a 28" tall tire. Im not a big fan of spinning a two bolt main motor over 6k so thats why I did the gear change. The motor is almost back together again and if I still have time I will get to the track and make a few more passes and see if I was right. However from street driving the car I did notice that there was no noticeable difference from the 3.42 gear when launching but the Xpressway driving was much easier and that should mean much better mileage. The car really pulled hard from 60 up.

 

[JC Turbo]

Which is why I went to a higher gear--3.08. Unfortunately I hurt the headgaskets on the first pass at Byron a few weeeks ago to test my theory, but I felt that before the change my car was spooling so fast with the 6776BB that it was going thru 1st and 2nd gear way too fast causing 3rd to really spin high before getting thru the end of the track, even with a 28" tall tire. Im not a big fan of spinning a two bolt main motor over 6k so thats why I did the gear change. The motor is almost back together again and if I still have time I will get to the track and make a few more passes and see if I was right. However from street driving the car I did notice that there was no noticeable difference from the 3.42 gear when launching but the Xpressway driving was much easier and that should mean much better mileage. The car really pulled hard from 60 up.

I'm interested to see how the gear change works out for you. I have thought about it for a while now. Keep us posted.

TIA
JC

 

[Blazer406]

I'm interested to see how the gear change works out for you. I have thought about it for a while now. Keep us posted.

TIA
JC

+1

I am also thinking this might not be a bad move. I don't want to buzz my engine past about 5500.... and I am hoping to be close to the upper 120's thru the traps.... might be a tall order even on 28" tall drag radials with 3.42:1 rear gears w/o a lockup.

If it worked.... it would be like having your cake and eating it too.....

Highway mileage out to bump up a mile or two to the gallon.

 

[Turbo6Smackdown]

Which is why I went to a higher gear--3.08. Unfortunately I hurt the headgaskets on the first pass at Byron a few weeeks ago to test my theory, but I felt that before the change my car was spooling so fast with the 6776BB that it was going thru 1st and 2nd gear way too fast causing 3rd to really spin high before getting thru the end of the track, even with a 28" tall tire. Im not a big fan of spinning a two bolt main motor over 6k so thats why I did the gear change. The motor is almost back together again and if I still have time I will get to the track and make a few more passes and see if I was right. However from street driving the car I did notice that there was no noticeable difference from the 3.42 gear when launching but the Xpressway driving was much easier and that should mean much better mileage. The car really pulled hard from 60 up.

exactly what i was trying to ask, but didnt know how. so, on 26" tires, with 3.42 in the rear, it IS possible to get up too fast. All i was trying to do, was to see how fast i could spool this stock turbo. and i believe i could spool it pretty dam fast with all the stuff that was out there today.

 

[Junior Samples]

Which is why I went to a higher gear--3.08. Unfortunately I hurt the headgaskets on the first pass at Byron a few weeeks ago to test my theory, but I felt that before the change my car was spooling so fast with the 6776BB that it was going thru 1st and 2nd gear way too fast causing 3rd to really spin high before getting thru the end of the track, even with a 28" tall tire. Im not a big fan of spinning a two bolt main motor over 6k so thats why I did the gear change. The motor is almost back together again and if I still have time I will get to the track and make a few more passes and see if I was right. However from street driving the car I did notice that there was no noticeable difference from the 3.42 gear when launching but the Xpressway driving was much easier and that should mean much better mileage. The car really pulled hard from 60 up.

When i get my 9inch put together I was thinking of a 308,
i ran that gear in a few C3s and i kinda liked it..but another forum

 

[fuzzyGN]

I still have the stock turbo which spools fast anyway but then I added a 206 roller cam, ported heads, a Vigilante converter, and an MSD boost controller. Holy caca! The boost controller was an experimental unit so the boost was set to only 14 or 15 psi but if you got after it, it would be at full boost by the time you crossed over the intersection; from a dead stop! It was insane fun. I haven't messed with the car much since. I broke something on the 21 dyno runs (in 3 hours!) while we were testing the controller. Better have great tires installed if you go this route. I have no idea what would happen with more boost but I don't think the tires could handle it.

 

[Turbo6Smackdown]

hey fuzzy. what stall converter do you have? what injectors, and what sort of tires do you run?

 

[fuzzyGN]

My converter stalls at about 3000RPM. It is the one they advertise to stall between 28-3200. I had 50's with a Thrasher type chip on pump gas with Nitto drag radials. I have the 275/50's on stock but widened GN wheels. I now have installed my 30 pound injectors so I can run my 100 octane Thrasher and either Pro-pain or alky. That should be stupid fast spool. The intimidation factor at a stoplight should be huge

 

[GNVYUS 1]

Downside

You will want a rev limiter setup in your chip, I spun 1st so fast it hit the 6k rev limiter before the tranny shifted it once ( still hydroplaning ). That was on my current TA49. That could of had rods and crank pieces going down side my GN.

 

[Turbo6Smackdown]

Oh. Not good lol. Explain to me though, why your trans didnt shift. Was there something wrong with it? I definitely dont want that to happen with mine. so where should the rpm's be set on the rev limiter then?

 

[pacecarta]

Downside

You will want a rev limiter setup in your chip, I spun 1st so fast it hit the 6k rev limiter before the tranny shifted it once ( still hydroplaning ). That was on my current TA49. That could of had rods and crank pieces going down side my GN.

you dont want a limiter in the chip with alky!! think about what the chip does to conrtol rpm limit , it cuts fuel off by shuting down the injectors , if all you were running was fuel thats a great way to limit the motor since theres no fuel in the cylinder ... but with alky and fuel your alky doesnt stop spraying and the cylinder still fires only now its lean , not good for headgaskets

 

[Quick6'n'-K.C.]

I went to the RJC valve on my daily driver and it would fry the tires thru 3rd gear off idle. It wasnt what ive been trying to do over the last few years.
Ive always tried to get my car to hook on radials.

So what i did was removed the RJC and went back with the BSTC controller with the controller not to take control till later on with the boost pressure.

Lemme tell ya, 9x11 convertor that will stall to 3500 rpm along with a stock turbo and a RJC really doesnt do anything but fry tires

Now that the car has a gt3255e, it still spools too fast, but now i have to control how quick i can throw down the gas pedal or else the turbo comes on too fast.

IMHO- the faster the turbo spools and you can stick it to the ground is just more horsepower that your gonna get sooner to get the 60' times down.

If you can get the car to launch at 15psi and slam toward your max boost, your gonna get those kick ass launches that everyone dreams of.

Take it easy
BW

 

[BOOSTBROTHER]

When I had the stock turbo and had it set up for race gas I could leave the line around 10lbs and 26lbs came really fast. I had 1.75 60' on 26"DR the only down fall is if you break the tires loose thier is no getting them back.

 

[GNVYUS 1]

Trans didn't shift because it was hydroplaning and I suspect it happened so fast that maybe there was a load issue it needed to meet etc, not a tranny/chip guy.

I see what you mean with the alky ( in theory ) but I don't see how the cylinder is going to fire that fine alky mist that already evaporated and cooled down in the inlet air? And even if it could fire it, you either have a blown headgasket or an oil pan full of broken parts due to a 6500 + rpm missed shift, I still would take the head gasket.

 

[Quick6'n'-K.C.]

Trans didn't shift because it was hydroplaning and I suspect it happened so fast that maybe there was a load issue it needed to meet etc, not a tranny/chip guy.

I see what you mean with the alky ( in theory ) but I don't see how the cylinder is going to fire that fine alky mist that already evaporated and cooled down in the inlet air? And even if it could fire it, you either have a blown headgasket or an oil pan full of broken parts due to a 6500 + rpm missed shift, I still would take the head gasket.

All that meth isnt evaporated when entering the combustion chamber, just ask a buddy of mine who split his stage 1 block where it wouldnt upshift and filled #5 full of meth on a dual meth nozzle.. The valve tulip broke off, and shoved it into the sparkplug. That was not a good day at the track.

If your running alot of meth and the fuel is shut off, yes it still will run on pure methanol.
Did you catch the thread a few months ago about the guy who ran out of gasoline? He sat there and held the prime button and drove to the gas station on pure methanol

Take it easy
BW

 

[Turbo6Smackdown]

for me its about pure 60' times. I want the fastest spooling setup possible. I'll be runnin 275 race slicks, in hopes i can keep em planted. I was just wondering if there was a downside to this, like what rabbit was sayin in post 5 of this thread.