ta 66

[roderick]

what is the max power you can push from a ta 66

 

[86brick]

Roderick, based on what I've seen I'd say around 750hp at the flywheel which is enough to put a full weight (3600-3700lb) TR in the low 10 high 9 second range...... Jane Armstrong's 3635lb TR (which was featured in the November '03 issue of GMHTP) has run 10.20 @134mph so far w/ a 1.50 60' and this is with a John Craig (Limit Engineering) TA-66 Q-trim turbo.... Keep in mind 134mph is enough to run a high 9 second pass (with a low 1.4 high 1.3 60') and in the article about Jane's car they said it made 700hp and 1000ft-lbs of torque on the chassis dyno with the converter locked.... Jane's car is the fastest car I know of using the TA-66 so that should give you a good idea!

Oh yeah, just for kicks the good ol' HP calculator http://home.neo.rr.com/jturrin/calchp1.htm says that Jane's car is making 680hp at the rear wheels and 765hp at the flywheel based on how much the car weighs (3635lbs) and what it ran (10.20 ET and 134 MPH)

 

[Dusty Bradford]

On a typical 3600# car you can easily run 10.60's all day with ported heads and small cam. Pushing the turbo like us who run TSS which is a stock appearing class, two of us have gone 10.40's with stock location intercoolers and iron heads. Red has a really efficient combo with his custom intercooler and high flowing heads and that allows him to make a lot more power than those of us that have to run high boost levels to cram the air in the motor with the rules of TSS restricting us. With a front mount and aluminum heads I believe 10.10-20's are very possible, but if your going to run a front mount and put on aluminum heads then there is no reason to stick with a stock appearing turbo. The TA-66 came about to get the biggest turbo possible in the stock compressor housing to meet the requirements for TSS at the GS Nats.

I am running a PTE TA-64 Q trim which is supposed the be the same as Limits 66.

 

[86brick]

Originally posted by Dusty Bradford
On a typical 3600# car you can easily run 10.60's all day with ported heads and small cam. Pushing the turbo like us who run TSS which is a stock apperaing class, two of us have gone 10.40's with stock location intercoolers and iron heads. Red has a really efficient combo with his custom intercooler and high flowing heads and that allows him to make a lot more power than those of us that have to run high boost levels to cram the air in the motor with the rules of TSS restricting us. With a front mount and aluminum heads I believe 10.10-20's are very possible, but if your going to run a front mount and put on aluminum heads then there is no reason to stick with a stock appearing turbo.

Dusty, are you using the P-trim wheel? I would think there would be a difference in power between the P-trim and the Q-trim and also another thing that I think helps Red with Jane's car is that 3.5" DP and because that Stage1 motor has a steel crank I'm sure it can see 6000+rpm without any worries!

-EDIT

Okay thanks for clearing that up

 

[Dusty Bradford]

I added the Q trim to my post above. I installed the 3.5 DP but saw no gains at the track but it was on different days. I think the heads are a major difference. It appears I can't get enough exhaust out to take advantage of the larger downpipe. I'm sure your probably right about the RPM. Red is flying in TSS trim so he's got to be doing something different than the rest of us can do, and I don't blame him or keeping it to himself.

Oh yeah, I also tried a P trim and it didn't appear to hurt my MPH. It changed about 1.5 mph in the 1/4 but the day I tested the P I was running into a bad headwind.

 

[86brick]

Yeah another thing that comes to mind about Red's combo is the converter..... He runs that Precision 9.5inch "0" pump (pretty sure it's 3200 stall) LU converter which is a bit tight IMO but I think it may help because from what I've seen keeping the converter a bit tight rather than loose will give you some MPH and with him running that little 206/206 hyd. roller cam it might not hurt him much at all on the spool up.... As you said he is doing something different and whatever that is it's working for him! I'd bet he is seeing 6K+rpm though......

 

[Dusty Bradford]

He locks his converter so he could run a 4000 stall and still MPH on the big end. When we ran in the finals against each other in 2000 before he went to the Stage setup our et's were nearly identical but he had me by 5 mph.