Spooling help

[Shimy87]

Okay, looking for some advice on getting a better spool up. Have the new 5931 turbo, convertor appears to be in the 2600-2700 range. A different convertor is not in the wallet this year so please dont tell me get a higher stall. Been taking fuel out of first and adding timing in first with the chip. That has been helping but wondering if there are any other tricks out there. Wrapping down pipe? turning down FP 1 or 2 pounds?
 
Thanks!

[good2win22]

Are you still running the stock air intake system?  Could go with a less restrictive set up.  I can assure that my TA49 surprised the shit out of me the first time I got into the boost after installing a 3" cold air intake setup.  neverminde. just read your signature

[motorhead]

What does the carbon trace look like from your downpipe puck to wastegate port on the turbine housing look like?

1. Is it fully seated?
2. Can it be ported?

Also check the tension on the WG actuator arm, if it is set too loose it will unseat quickly and hemorrhage exhaust gas.  Too tight and it will cause boost creep.

Whatever you do: do not change the recommended baseline fuel pressure.

[Steve Wood]

Use a manual boost controller and remember that told you the converter was too small and turbo68 told you the pte housings spooled slower. 

[Shimy87]

Will look and see if porting can be done....leave 1/8 inch overlap? Using a rjc boost controler already. I do remember turbo68 said to use the garret housing....can someone explain that to me?

[Scoobum]

The Garret .63 exhaust housing is smaller than the Precision .63 exhaust housing. The Garret...being smaller...spoo ls quicker. Be sure you have ZERO pre turbo exhaust leaks...and that your headers aren't cracked.

[Scoobum]

Would it be possible for you to slide under the car...and take a pic of the convertor...an d try and get some numbers off it? We could likely pinpoint the convertor you have.

[Steve Wood]

Not sure what porting the waste gate will do for spool.  I suspect mike was talking about a different form of porting which probably needs to be done by a pro, but maybe not.  Bottom line is that the laws of physics are against you

[Steve Wood]

I would think it would spool quickly from a roll and you have the wrong tires for a standing start anyway!

[Scoobum]

Not sure what porting the waste gate will do for spool.  I suspect mike was talking about a different form of porting which probably needs to be done by a pro, but maybe not.  Bottom line is that the laws of physics are against you

I contacted Patrick Rubio when I ordered my 6262 to get him to match a convertor for me.

[Shimy87]

Wed. I will have it up on the lift to change the starter. I will try to get some pics and numbers of the convertor. Headers are good and no exhaust leaks. The spool isnt terrible, just not as good as stock was. I thought with the experience on here some of you guys might know some "tricks" to help me

As usual I should have researched better before buying something. You know the saying " a fool and his money......"

[Steve Wood]

numbers on converters are meaningless normally...onc e a converter has been modified, the letters mean nothing.

As I said before, adjust the alky so it starts about 10-12 psi.  Lean it down in low, add a little timing.  That is about the best you can do when the converter is mismatched. 

[motorhead]

Not sure what porting the waste gate will do for spool.  I suspect mike was talking about a different form of porting which probably needs to be done by a pro, but maybe not.  Bottom line is that the laws of physics are against you

I was chasing the whole "if your WG puck is loose/failing to seat, tighten the arm; if boost creep develops, port WG hole" thing.  It is a double edged sword.

[Steve Wood]

new turbo should not need any porting for his application.  He is running what is close to a modern day equivalent to a TE60 which generally required about 3000 rpm stall. When you add the larger PTE housing, you compound the problem. If it spools quickly from a stomp it would not appear to be turbo related.

[Scoobum]

I went back and checked Patricks chart for the new turbos from a couple years back...and yours is likely the newer version of the the 5957. Precision is calling for a stock to 2800 convertor for the JB version. The 6057...which is the next size up...is calling for a 2800...for the JB version. A quality 2800 convertor should spool your turbo like a mad whore.