Lets talk turbine wheels and "trim,"have some questions.
09-27-2011, 09:45 PM
#22
Hmm that is weird, maybe you just got a blem Turbo? Or here's a thought, do you have a flex pipe in the crossover somewhere? Sometimes they start to fall apart or shrink inside somehow, just throwing out ideas here. Good luck!
09-28-2011, 07:53 AM
#23
10 Second Club
Thread Starter
iTrader: (22)
Join Date: Mar 2006
Location: Northwest side of Chicago
Posts: 3,677
Likes: 0
Received 2 Likes
on
2 Posts
I called Joe at comp about which 80mm turbo was used in the ford magazine articles. He said my exact turbo except with a cast wheel. He said my entire issue was the billet comp wheel. I guess on a large cube motor it flows to much and the turbine can't keep up causing massive back pressure. I hope he is right.
10-31-2013, 07:22 PM
#29
10 Second Club
Thread Starter
iTrader: (22)
Join Date: Mar 2006
Location: Northwest side of Chicago
Posts: 3,677
Likes: 0
Received 2 Likes
on
2 Posts
Need to update sig lol. Im at 900whp and 9.8 now. Those numbers were with an 80/79 with a cast comp wheel instead of the billet that had the 4:1bp.
The cast had About 2:1 bp.
I since put a ct5 94/88 turbine 88 comp wheel billet. That's about 1.5:1 bp and works well.
The cast had About 2:1 bp.
I since put a ct5 94/88 turbine 88 comp wheel billet. That's about 1.5:1 bp and works well.
10-31-2013, 07:45 PM
#32
10 Second Club
Thread Starter
iTrader: (22)
Join Date: Mar 2006
Location: Northwest side of Chicago
Posts: 3,677
Likes: 0
Received 2 Likes
on
2 Posts
Only track times were with the cast, the billet wouldn't even get past 11psi because of the high bp. Didn't think there was much of a point to track it like that.
Comp told me all they did was swap out the billet for the cast. Back when iv was in this a few others said the billet on thatv turbo does not work well.
Comp told me all they did was swap out the billet for the cast. Back when iv was in this a few others said the billet on thatv turbo does not work well.
