Makes me wanna go spoon something :P

 

By being smaller in dimensions (compressor/turbine) compared to the GT37, does this make the PT67 a faster spooling turbo than the GT37?

 

Not sure on where you're getting you numbers from, but from precision's website the T4 PT67 P-trim has a larger compressor and turbine wheel, even with the 76 trim turbine wheel option for the PT67. Here's the link.

http://www.precisionturbo.net/turboc...tegory_id=3023

 

It look to me like the a/r on the hot side says .88

 

You have PM Bro !!

 

It really does to me as well, but Precision doesn't even make a .88 a/r exhaust housing.

 

What numbers did you compare?

 

If you convert the GT37 numbers to inches then you can compare them to those for the PT67 which are under the link for T4 Race and High Performance at the bottom of the page. This site doesn't give you the complete inducer and exducer sizes for the GT37, but 82mm is for the GT37 compressor wheel dia. is smaller than the PT67's wheel dia. of ~84.2mm.

 

Thanks for clearing that up for me, so the PT67 Should bit slighty laggier then, than the GT37, but have more power potential.

 

But, this is a ball bearing PT67 while the GT37 isn't ball-bearing. More power potential and spool could be better, but this is the T4 PT67 where you can get a t3 .82a/r turbine housing machined to accept the P-trim wheel as well.

 

So how would you say, the GT37R offered by AMS compares to the PT67?
Were are you expecting full boost on this setup your currently working on?
Also what would the t3 .82 A/R housing wind up being after you machine it, to fit the p-trim wheel?

 

The 37R they are offering is essentially the PT67 compressor wheel and housing with the P-trim turbine wheel stuffed in a .82 A/R T3 turbine housing and it's ball bearing.

Hopefully no later than 5500, but we will see when we start tuning.

Not sure on what the exact ratio will be after the machining is done.

 

The basic truth is that that turbo is not a GT37 anything . It looks to be based on Garretts TO4Z cartridge which means a 76 or "P" trim TO4 turbine coupled to Garretts TO4R compressor which is ~ 84mm 63 trim . It is not new and nothing about it is GT37 . Garrett GT37 turbo means in theory 72.5mm HP/UHP turbine driving either a 76mm BCI-18 compressor (GT3776) or an 82mm BCI-18 compressor (GT3782) . There is also a GT37 compressor series (76.2mm BCI-18) found in the above mentioned GT3782 and the GT3076R and the three compressor trim variants (48/52/56) of HKS's GT3037 .


Now if someone can show a picture of the turbo posed above (ID tag) it will solve all the arguments - as long as it was not removed or replaced .

Cheers .

 

I'm liking the graveyard of pistons and rods...If you ever get a chance to see that Anthony Hopkin's film The World's Fastest Indian, he has a wall that he hangs all of his broken parts on and it says "offerings to the God of speed"...Just an idea, =]

 

I believe the title tells you exactly what the turbo is = PT67 dual ball bearing...nothing new nothing special.