Author Topic: Turbo?  (Read 9024 times)

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Offline Forzfed

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Re: Turbo?
« Reply #15 on: July 17 2017, 08:21:07 PM »
Going to pick up my new turbo in a couple of days.  It has a .82 exhaust housing, I was contemplating putting a .63 A/R on.  What do you guys think?  I will have more compression in my motor but it will probably take a bit more to spool.  Thoughts?

Offline Scoobum

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Re: Turbo?
« Reply #16 on: July 17 2017, 09:23:24 PM »
One of the guys on the other board had a PTC race convertor spec'd at 3400 for the stall for the 6466 Precision...an d I ASSUME it had the .63 housing on it. Most don't dial in low gear tuning...so they immediately go for a looser convertor. What stall is your convertor?
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Offline good2win22

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Re: Turbo?
« Reply #17 on: July 17 2017, 09:36:49 PM »
A little birdie told me one time that until I broke into the 108-112 mph in the 1/8, there was no reason to put on an .82 housing. Said it would just make me slower.  I have no data nor any links for reference to back that statement up
Jason

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Offline TexasT

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Re: Turbo?
« Reply #18 on: July 17 2017, 09:50:59 PM »
An .82 is a big space to fill. You have to be moving a lot of air to use it effectively.
Rich

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Offline good2win22

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Re: Turbo?
« Reply #19 on: July 17 2017, 10:16:37 PM »
I guess we should ask if the 63 you have is a garret or a precision. A 63 Garret will spool guicker than the precision 63. Torque converter selection is key for maximum return
Jason

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Offline Forzfed

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Re: Turbo?
« Reply #20 on: July 17 2017, 10:24:59 PM »
With the 224/224 and a 4.1 the motor moves a lot of air and can be choked by a crapping exhaust housing.  One guy I spoke to that has a crazy fast GN told me in the 1/4 mile the exhaust housings don't make a difference they will run the same if you tune for them.  I guess I can try it and see.

One of the guys on the other board had a PTC race convertor spec'd at 3400 for the stall for the 6466 Precision...an d I ASSUME it had the .63 housing on it. Most don't dial in low gear tuning...so they immediately go for a looser convertor. What stall is your convertor?

I have a 9/11 3200 stall.

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Re: Turbo?
« Reply #21 on: July 17 2017, 10:55:36 PM »
One guy?

I'd still stay with the smaller .63 and see where you are then move to the .82 and "tune for it" and see where that takes you. I know you know more than one person who put on a bigger turbo and It went slower.
Rich

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Offline Forzfed

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Re: Turbo?
« Reply #22 on: July 17 2017, 11:01:13 PM »
One guy?

I'd still stay with the smaller .63 and see where you are then move to the .82 and "tune for it" and see where that takes you. I know you know more than one person who put on a bigger turbo and It went slower.

One guy that no one has even come close to running what he has!

Offline good2win22

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Re: Turbo?
« Reply #23 on: July 17 2017, 11:23:47 PM »
You may have mentioned it and I forgot.  4.1 is out of my league. Good luck!
Jason

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Offline Steve Wood

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Re: Turbo?
« Reply #24 on: July 18 2017, 09:49:29 AM »
I think the converter match will be the go/no go.

I have largely given up trying to figure out converters sitting on the shelf with a stall rating tag on them.  They either work or they don't. :D  I think a .63 gives you more leeway but we don't seem to have a lot of experience with  .82s
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Offline nocooler

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Re: Turbo?
« Reply #25 on: July 18 2017, 11:11:59 AM »

ignore me
IhaveaV8

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Re: Turbo?
« Reply #26 on: July 18 2017, 11:12:44 AM »

Thats a neat bug.


I'd think once you've maxed the turbo it's tapped out and done, time for a bigger turbine.
IhaveaV8

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Re: Turbo?
« Reply #27 on: July 18 2017, 11:45:01 AM »
One guy?

I'd still stay with the smaller .63 and see where you are then move to the .82 and "tune for it" and see where that takes you. I know you know more than one person who put on a bigger turbo and It went slower.

One guy that no one has even come close to running what he has!

So, we have "one guy" who runs way faster do I have that straight? I'm just some guy from the peanut gallery. Haven't even run a car at the strip in decades. Times change, and tech marches on. I just hate to see guys with the cool guy parts wondering what happened and why their car doesn't lay down a decent number.

Rich

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Offline Steve Wood

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Re: Turbo?
« Reply #28 on: July 18 2017, 01:04:30 PM »
If the car will hit 4800 rpm when your foot comes off the brake at the line, then it will work.

If we are not careful, we get hung up on what worked yesterday and sometimes, we miss out on advances.  Some times what failed yesterday was not due to the idea.  It failed because of the implementation .  Some one has to lead.   And sometimes those that lead have to "try, try, try again" before they hit the lucky combination.
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Offline Scoobum

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Re: Turbo?
« Reply #29 on: July 18 2017, 02:41:50 PM »
I'd bet dollars to donuts it was Dusty that stalled the convertor for that 6466...so he'd be in the ballpark. With extra cubes, you MAY get away with an .82. My 1.5x launches have all come off at 49xx...so Steve is correct about the launch. Murph is around the same launch RPM for his maxing out a stock turbo thread. You'll have to see what the convertor 'flashes' to on launch for a given RPM. Norbs did some testing years ago and picked up 3 mph with an 82 over a 63 with a 109.
Hard work pays off, dreams come true. Bad times don't last, but BAD GUYS do!

RIP Scott Hall AKA Razor Ramon

 

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