it is def not a Garrett casting. it does not even resemble a Garrett housing. even the flange is different. it was cracked inside along the divider in 4 spots. the Garrett housings ''according to Garrett'' are designed for gas motors. ATP was not.

 

I got additional clarity. The t3 units are old AirResearch castings from some tractor application and you are correct, the new T4 TS units are ATP castings. I saw that you coated and wrapped the housing so that likely contributed to the failure. Not an excuse for the turbine housing, but something one should avoid if running this turbine housing. Was Precision able to cut the 1.15 for the GT35 turbine wheel?

 

this is my 3rd ATP housing. well maybe my 4th. i did have a T3 1.06 the Geoff lent me. that one was returned to him years ago. i had no issues with that one. i do not know if it was a ATP part though. the 3 i had all broke. this one i did coat and had it wrapped. which i plan to do to the new PTE 1.15 housing as well.

thanks to Aaron at ER for all the help with the 35r 1.15 housing. he was the one who got me the info so he gets all the credit. it is not a PTE part. it is a Garrett housing machined for either the 35r or 37r turbine wheels. how do they do it? no clue. haha.

 

i want to add that the actual ''sand casting'' of the ATP part is so bad. all 3 housings i had all where different. i had to send one back before i used it for a replacement because the divider inside was not there for the last inch or so.

i spoke to someone ''idk if he wants me to say who'' about ATP vs Garrett housings. he said going from the ATP to a Garrett housing alone will net great gains for topend and less back pressure. if it was a Garrett 1.06 then going to a 1.15 you would see next to nothing. but ATP to Garrett he said there will be a nice gain. i wanted to gain the bigger turbine wheel while getting a better 1.15 housing. lets hope it works.

 

Good information and thanks. BTW, the units that cracked...where they T3 or T4 footprint? Also, did the new 1.15 unit provide the same placement/offset for the downpipe vs the ATP housing? Basically, was it a direct replacement and did you see any performance difference in spool/power?

 

So the 1.15 housing for the 35r (68mm) turbine exists???? I want now!

this just complicates things... 6266 in a 1.15, 6266 in a 1.15, efr8374 in a 1.05 or a hta86 in a 1.15?

 

the only T3 1.06 i had Geoff lent me. so i gave it back when i went to T4. all the broken housings where T4 1.06 APT parts. as for the new T4 1.15's i have not gotten the new turbo in the mail but when i do i will let you know. from what i am told no it will not alter any DP config's and will bolt right up. lets hope thats true.

once i get the new housing ill snap some pics VS the atp part and post them up.

 

or 6466 in 1.15

 

Here is what I found...Garrett sells a standard 1.15a/r T4 TS cut for a P-trim turbine wheel. These units have the v-band flange welded to the back of the turbine housing so you would be able to determine if yours is the same based on this feature. Part number would also give it away. To make it work someone would have to obtain the virgin core to cut for a 35r turbine wheel. Looking forward to seeing some pics.

 

and that is what i think is happening. there getting un cut cores and machining them for the customers request. a very cool option and a housing made for gas engines

 

Garrett also make a 1.00, 1.32 and 1.52a/r turbine housing in a T4 TS cut for a p-trim. Let us know if yours is welded like in the picture below.

 

We have had 4x ATP housing fail over the last 18months, in both T3 GT30 twin scroll and T3 GT35 twin scroll.

They have informed me they are improving their material quality soon.
Must be costing them a bomb in warranty/RMA

Cheers, Mike

 

warranty? haahhaha. maybe a warranty of a fancy convo piece in the garage.

 

the guy i spoke to said you cant do the 1.32 for the 35r. the 1.15 will be the biggest. i could have miss understood though.

i bet there 1.00 flows more then the ATP 1.06 though.

 

typo, didnt mean to have 6266 twice there.

so your going from an hta86 in a 1.06 to a 6466 in a 1.15?

if I can get a hta86 in a 1.15 it will be a tough decision between these two turbos