Considering getting some 67's to upgrade from my Precision 61's. 
What turbo is deemed "the best"? Brand, make, model, etc...
Thanks! :beer:
What turbo is deemed "the best"? Brand, make, model, etc...
Thanks! :beer:
Best 67mm Turbo's?
- Thread starter SIr RicCuS
- Start date
how hard are you pushing the 61's? Car better have a th400 behind it....
Wanted an OD so I went with a fully built 4R70W.
The idea behind going bigger is due to wanting to maximize the amount of power possible with pump gas. At the same boost level, 67's will flow significantly more than 61's, etc...
more rwhp does not mean faster and more fun, think supra power band
Completely aware of that. I'm shooting for the fastest street driven pump gas (91) Terminator time. :rockon:
Whats your build consist of? I have twin 66s but it required a lot of extra $$$ parts.
I have one (1) precision 6766. I couldn't imagine trying to spool two of those things with a mod motor.
I run Garrett 67mm turbos. P-trim with .82 A/R housings.
They are journal bearing and not ball bearing style.
On my 5.4 they are a perfect match and with my 4R70 they spool quickly.
Recently on 18 pounds and 93 octane it made 925rwhp thru the 4R70 with 3.55 gears and 305-35-18 drag radials.
They are journal bearing and not ball bearing style.
On my 5.4 they are a perfect match and with my 4R70 they spool quickly.
Recently on 18 pounds and 93 octane it made 925rwhp thru the 4R70 with 3.55 gears and 305-35-18 drag radials.
Such as what?
It's a pretty extensive build.
http://www.cardomain.com/ride/2289179/2004-ford-mustang
The built shortblock I already had isn't going to cut it and is currently being pieced out. This is what's being built to take its place.
Teksid Aluminum Block
JE Forged Pistons 9.1:1
Manley Forged H-Beam Rods
Eagle Forged Crank
Melling Billet Oil Pump
Canton 8qt. Pan with Windage Tray & Baffle
ARP 2000 Hardware
Top end is going to include the stock heads, modified springs, modified valves, and '98 Cobra cams (more aggressive, higher revving, & better suitable for the turbo application).
Now THAT is what I'm talking about! :rockon:
Link to build thread or any thread with your setup list please? :beer:
Anyone else have a say in which 67 gets the title best turbo?
Let me know when you plan on selling your 61's....
If you have stock heads you can pretty much forget putting 67s on there. With such large turbos on a small engine with no headwork you are going to have SERIOUS turbo lag, and you wont nearly reach your goal before running out of RPMs.
Good call. Definitely something to consider.
There are a handful of people making nearly 1000 RWHP with 61's and non-ported heads currently though.
I know Israel specifically made 945 RWHP on c16 through a hot side, '01 Cobra intake, and 61's. I'm sure the heads will flow efficiently enough, but porting them would definitely be ideal.
On that note, who does the best port work now-a-days?
I'll keep you posted! :beer:
I run Garrett 67mm turbos. P-trim with .82 A/R housings.
They are journal bearing and not ball bearing style.
On my 5.4 they are a perfect match and with my 4R70 they spool quickly.
Recently on 18 pounds and 93 octane it made 925rwhp thru the 4R70 with 3.55 gears and 305-35-18 drag radials.
Holy shit man!:banana::rockon:
Man, you're car is nuts!I run Garrett 67mm turbos. P-trim with .82 A/R housings.
They are journal bearing and not ball bearing style.
On my 5.4 they are a perfect match and with my 4R70 they spool quickly.
Recently on 18 pounds and 93 octane it made 925rwhp thru the 4R70 with 3.55 gears and 305-35-18 drag radials.
With an auto and turbo(s), bigger usually does mean faster, lol.
Yes, there are many people pushing 1000rwhp with stock heads on C16. You can hardly compare this to pump gas numbers.
My point was head flow efficiency... If the heads flow fine to 1000 RWHP (regardless of that being achieved through pump gas or race gas), they won't need to be altered with 67's.
Never said 1000 RWHP was attainable through pump gas.
Also, considering your goals, you may want to consider a huge custom FMIC similar to what Ryan has. That is one key to making big pump gas numbers. I know a guy who had a 4.6L with ported B heads, stock '96 cams, and a custom HUGE FMIC and he made close to 900rwhp on pump gas. For all out efficiency, some custom cams that are slightly larger than the OEM would prove beneficial. Revving it to close to 8K RPM's with a good flowing intake would help too. That friend of mine ran his to about 8000. Before he sold the car, the best run he had was at 17 PSI and he ran 141MPH. He never did make a run at 21-22 PSI. He was confident he would have been in the 9's at over 150MPH--all on 93 pump (I know you're running 91).
Anyway, just food for thought.....
Anyway, just food for thought.....
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