67/65 questions....

[disco stu]

I've done a search, did not find the info I am looking for.

What is the difference in compressor wheels? I have heard that it has a smaller exducer diameter. Which is confusing because I have read that this is an upgrade to the 67/76. I have been told that it spools faster, which is great. But does it compromise power potential over it's earlier 67?

I need a fast spooling turbo that will trap 135 in a 109 with the necessary supporting mods, and have not yet decided between the two.

 

[Black Power]

I've done a search, did not find the info I am looking for.

What is the difference in compressor wheels? I have heard that it has a smaller exducer diameter. Which is confusing because I have read that this is an upgrade to the 67/76. I have been told that it spools faster, which is great. But does it compromise power potential over it's earlier 67?

I need a fast spooling turbo that will trap 135 in a 109 with the necessary supporting mods, and have not yet decided between the two.

Why do you want to go slower John? Or is this for another car

 

[disco stu]

Another car.

 

[disco stu]

ttt

 

[Sweet6]

I have seen a 67/65 on a stock motor at 30PSI trap at 122. Another person we know has run 128 or so at 28 PSI on a built motor(stock CI). They are P-trim housings. I think 135MPH may be a tall order for consisitent 135 traps with the 67. I know the Q-trim 67 has dipped into the 9s.

 

[MikeL.]

Otto ran 127.5 on pump/alky and I think (not positive) that it was the .63 housing. The .85 housing may get another 1 maybe 2 mph out of it. 135 might be tough but that'd give me hope.

 

[TURBO 6]

JC's GN has gone 139mph with a 6776 with a .63 housing. Look in the alky sticky "fastest pump gas and alky"

 

[disco stu]

Mainly, the decision I am going back and forth on is the 67/76 or the 67/65.
More power with the 76 because of the larger exducer? Or more power with the newer compressor wheel. Any input on this?

 

[Black Power]

Mainly, the decision I am going back and forth on is the 67/76 or the 67/65.
More power with the 76 because of the larger exducer? Or more power with the newer compressor wheel. Any input on this?

They should use the new style compressor wheel with a large exducer

 

[MikeL.]

When I ordered my 6765 from Mike he said despite the smaller wheel, versus the 76, it still made more power and due to better efficiency and spooled a hair quicker because of the size difference. I don't think you can go wrong with either of these two for a fast streeter.

 

[Eticket]

Seems like neither will do it unless you really max out a combo. Looks like you'd have to go to the GTQ wheel to get it done (like Melissa). Or go to a 70GTQ, they are the same price because the Q wheel is the expensive part. I believe both 67's have the same compressor side, but the 65's exhause side looks like a a slightly smaller exhaust side than a GTQ and looks like an aerodynamic GTQ wheel.

I've done alot of contemplating on this. I've settled with "just running" low 10's and will upgrade later if the 67 doesn't take me where I want to go. Last I heard, they're out of stock and will be able to ship any day now (have one on order).

 

[GNVYUS 1]

The 65 is the exhaust wheel and is more efficient while spooling a tad faster PTE said over the 76. The comp wheels should be the same there.

The new PTE comp wheel is the 62mm and a dyno of the 67/76 vs the new 62/65 showed the new billet wheel spools way faster making way more power in the mid range with a slight edge at the very top. This was on a 2.0L motor spinning to 9k so the new 62/65 is much better and probably what you're looking for.

But 135mph even on this turbo is probably asking for a lot unless it's pretty light or has big cfm heads and maybe running more than 30psi. Hard to say as it's a new turbo.

 

[Black Power]

The 65 is the exhaust wheel and is more efficient while spooling a tad faster PTE said over the 76. The comp wheels should be the same there.

The new PTE comp wheel is the 62mm and a dyno of the 67/76 vs the new 62/65 showed the new billet wheel spools way faster making way more power in the mid range with a slight edge at the very top. This was on a 2.0L motor spinning to 9k so the new 62/65 is much better and probably what you're looking for.

But 135mph even on this turbo is probably asking for a lot unless it's pretty light or has big cfm heads and maybe running more than 30psi. Hard to say as it's a new turbo.

I have a feeling John could make a 6776 or a 6765 do 135 in the 1/4. I saw his brick trap 140 or 141 in Noble with a 70. I think his current setup with a 6776 would do 135. Must be nice to have good heads

Make it happen John :tongue:

 

[disco stu]

Thanks Willis. But this is not for my car. But it does have good heads.

That was with an OLD 70. I am thinking about going to a newer 70. Mine is done, can't get anymore out of it. But, then again.... there is always going to a 4 bolt and a 76mm. Hmm. But, anyway. Back to the 67 stuff.