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turbo upgrade 79 930

Hey guys, so I got this upgraded turbo from PP and it's smaller than the one that came out of the car.
two problems the pipe that goes to the inter cooler is 3/16 smaller on the new turbo even with the new flange from PP, do I just crank down the hose clamp or is there a different flange I need? And the turbo bracket is 3/8 of an inch farther away from the body, is there a different bracket or do I just ream to fit?


Thanks guys

Old 10-13-2014, 05:49 PM
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Looks like you down graded from a K29 or k28 whatever to a smaller inefficiant old design overpriced journal bearing 3k borg warner k27 unit.
I know you didn't want to hear that but it is what it is... return it if you can.

If you upgrade... it's going to be a ball bearing Garrett turbo with a billet compressor wheel like a Turbos Direct Garrett GSX 61, or a Garrett GT35R.
There is no borg warner 3k turbo that will spool up like either of these or make as much power.

... and they cost less too.
Old 10-13-2014, 07:24 PM
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Quote:
Originally Posted by JFairman View Post
There is no borg warner 3k turbo that will spool up like either of these or make as much power.

... and they cost less too.
Let's clear this up. Borg-Warner's (non-KKK's) spool probably the quickest in the journal bearing world in comparable sizes. I'm proof.

KKK Borg-Warner's are the older designs you speak of.

Don't want to turn anyone off to the BW turbos!
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Old 10-13-2014, 07:47 PM
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So the smaller one will work with some adjustments? It just won't be as fast?
Old 10-14-2014, 03:50 AM
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Yes the smaller K27 should spool quicker than the large turbo but at the cost of peak power.
Fitment is going to require adjustments. You can see that 3 of the 4 mounting points are different (assuming both are T3 flange base). The K27 uses a stock 930 mounting bracket but the location horizontal will change.
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Old 10-14-2014, 03:59 AM
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Yet another case where size matters, but smaller is a good thing.

The smaller (less mass) turbine assembly will change speed quicker than the larger, but as Brian says, with the expense of ultimate volume. My gut would say for a street car the K27 you have will be fine.

Keep the updates coming and again welcome aboard.
Old 10-14-2014, 06:17 AM
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Last I checked a new stone age K27 cost twice as much as a new journal bearing Garret TO4Z with cast aluminum compressor wheel that is also called a Garrett Blowzilla by Turbos Direct.. TurbosDirect.Com Web Site - Home. They go for around $800 new.
Blowzilla will blow the doors off any overpriced K27.

Or the faster spooling ball bearing version of it with a more efficiant billet compressor wheel that they call a GSX 61 goes for around $1275 new.

They make way more power because they have newer design more efficient compressor and exhaust turbine wheels and housings.
Old 10-14-2014, 07:29 AM
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So the upgraded turbo from PP that has been re designed with new turbo technology hasn't it? it's not the same factory 80's tech is it?
Old 10-14-2014, 06:50 PM
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Quote:
Originally Posted by fstarr56 View Post
So the upgraded turbo from PP that has been re designed with new turbo technology hasn't it? it's not the same factory 80's tech is it?
What are you after with this turbo you bought? Is the bigger old one damaged in some way?
If you're wanting boost to come on earlier there's much better turbos to use than a K27 7200 and they cost a lot less too.
If you're after more power in the midrange and upper rpms the older bigger one is much better.

The o-ring adapter on the new turbo is for a stock charge pipe that uses o-rings to seal (and they never do seal completely) and if the bigger old turbo was on the car the original charge pipe had to be cut off at the bottom and a hose put over it and clamped in place to use it. Or a custom made charge pipe was on the car. Don't try and squish a hose thats too big with a hose clamp to try and make it fit. That won't work.

An in focus up close picture of the little blue tag on the new turbo is needed to really identify it but it looks like a plain old K27 7200.
They both look like they have T3 turbine housing flanges on them from what can be seen so far.
A picture of the charge pipe that was used with the bigger turbo would help too.

Old 10-15-2014, 07:45 AM
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