Author Topic: jason's education thread  (Read 97108 times)

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Offline Steve Wood

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Re: jason's education thread
« Reply #30 on: October 06 2014, 02:19:05 PM »
I think that your car is running pretty well for what you have.  I suspect that if you raise the boost to 26 psi and get the fueling trimmed, it would be in the elevens in the quarter.....I don't really see anything particularly wrong with it
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Offline good2win22

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Re: jason's education thread
« Reply #31 on: October 06 2014, 02:22:44 PM »
I have the PTE slic installed and I have ran an 89 mph in the 1/8th but it was clocked when I was running the 1/4 mile. 
 
I am gonna keep working the tune and my driving skills at launch.
what would be a better tire choice?  I have a set of 15x8s I could use instead of these 16 inch GTA's.  I know there are lot more choices in tires with the 15 inch wheel diameter.  Keep in mind that I haven't rolled the inner rear fender
 Haven't really had anyone mention anything more about how much boost I could run except for Brad and now you Steve.  I may dial in 25-26 pounds like ya'll suggested and go for broke this weekend at thunder valley.  I'm hoping to get there friday evening to make tech and a few test hits at this "new to me" track.  Thanks guys.
« Last Edit: October 06 2014, 02:32:11 PM by good2win22 »
Jason

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Offline good2win22

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Re: jason's education thread
« Reply #32 on: October 06 2014, 02:33:53 PM »
I'm also going to ring out the wires to the ecm and clean all connections. 
Jason

1966 Ford Ranch Wagon
1982 Jeep Wagoneer Limited
1986 Grand National BLK PHNX
1987 Turbo Regal Limited
2018 Ram 2500 Cummins

Offline Steve Wood

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Re: jason's education thread
« Reply #33 on: October 06 2014, 02:33:58 PM »
after you turn the boost up...get on the road and do a few high gear stomps to make sure it is not leaner than about 750 on the top end.  I have run a bit leaner but I don't think it really gains much.

then check out first/second and try to lean it down to about the same range.


My experience is that boost beats timing every time so I don't mess with timing much.  Sometimes I may actually reduce it in top gear if I need to in able to run the boost.

A 275/60-15 generally fits on an 8" wheel if the back spacing is close to 4".  That's a 28" tire.  The longer patch will give you more bite than a slightly wider tire.  It also loads the turbo better and brings it up quicker.  I run Nittos because I don't go to the track anymore.  M/T's hook a bit better at the track but they wear out a lot quicker because the rubber compound is much softer.

Just remember that on the street, the speedometer will read about 8% slower than your actual speed unless you put a 27 tooth gear in the speedometer drive at the tranny
Steve Wood

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A lot of broken parts does not make you a racer; it makes you a slow learner.

Offline Scoobum

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Re: jason's education thread
« Reply #34 on: October 06 2014, 05:56:06 PM »
I'd keep my eye open for a used pair of 28x9 slicks...as they have the same dimensions as a 275/60/15 drag radial. They fit on a stock GN rim and clear the frame rail and fender lip...as can bee seen by this idiot launching. :) I did a test one time. I removed the .63 Garret housing on a TA 49...and slapped on a Precision .83. With the same boost and tune I gained 3 mph. Leave Erics 3rd gear timing alone...and work on your low gear tuning. Put the boost to it and enuf 3rd gear fuel so it won't hurt itself.
Hard work pays off, dreams come true. Bad times don't last, but BAD GUYS do!

RIP Scott Hall AKA Razor Ramon

Offline Pyro6

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Re: jason's education thread
« Reply #35 on: October 06 2014, 06:20:19 PM »
One of your earlier questions abouty 60' time. My experience has been 1.60 plus/minus gets you 11.50 plus/minus in the 1/4. Pulled a random slip: 1.588 11.317.

Offline Steve Wood

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Re: jason's education thread
« Reply #36 on: October 06 2014, 06:25:18 PM »
and the old rule of thumb works pretty well.  One tenth in the short time results in 1.5 tenths in the quarter on an 11-12 second car
Steve Wood

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Offline good2win22

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Re: jason's education thread
« Reply #37 on: October 06 2014, 09:02:07 PM »
I also have the original T rims. I believe they are 7 inches wide. Wonder what width would be better for that tire size?


Here's my first time slip and a pic of the precision .63 turbine housing.  Funny thing is, I am faster now in the 1/8 than I was in the 1/4! 


Sorry for all the red pookie.  That's from the install with the external wastegate. Not sure if all external waste gate pipes are the same but that one from GN1 was particularly lower than than my rjc down pipe and you can see that it wasn't even covering the hole completely.  Gotta love used parts...
Jason

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1986 Grand National BLK PHNX
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Offline good2win22

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Re: jason's education thread
« Reply #38 on: October 06 2014, 09:12:35 PM »
Here's the pics. Had to resize
Jason

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Offline nocooler

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Re: jason's education thread
« Reply #39 on: October 06 2014, 09:14:23 PM »
275/60/15 MT drag radials work well on stock t-type wheels.

If you are going to tune by 02's watch the mph. Get a base line and then pull fuel until the car slows down then go back to the fastest setting.

I'm a big fan of running lean - rich is not safe.
IhaveaV8

Offline Steve Wood

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Re: jason's education thread
« Reply #40 on: October 06 2014, 09:27:58 PM »
I don't see Jason's large puck on his site...I think it was large enuf to cover such but, I may be wrong :)
Steve Wood

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Offline Steve Wood

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Re: jason's education thread
« Reply #41 on: October 06 2014, 09:34:13 PM »
Steve Wood

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Re: jason's education thread
« Reply #42 on: October 06 2014, 11:13:18 PM »
That puck is huge. Jason offered it after I bought my DP from him. It caught on the inside of the DP...so I trimmed some of the inside of the DP off with the die grinder so it would swing freely.
Hard work pays off, dreams come true. Bad times don't last, but BAD GUYS do!

RIP Scott Hall AKA Razor Ramon

Offline good2win22

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Re: jason's education thread
« Reply #43 on: October 07 2014, 01:43:58 PM »
2 quick questions...  Tranny locked the converter right at 100 mph but didn't shift into 4th while testing yesterday evening.  Normal?  Should I be making these runs with tranny in 3rd gear D or overdrive D?
Jason

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1986 Grand National BLK PHNX
1987 Turbo Regal Limited
2018 Ram 2500 Cummins

Offline Steve Wood

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Re: jason's education thread
« Reply #44 on: October 07 2014, 02:11:30 PM »
3rd
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A lot of broken parts does not make you a racer; it makes you a slow learner.

 

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