6.9

Reply Subscribe

Thread Tools

Search this Thread

Oct 7, 2011 | 01:02 AM

Fireman_dave

Thread Starter

Senior User

Joined: Jan 2011

Posts: 184

Likes: 0

From: Hope,in

6.9

ok lets say i build a 6.9 with a .040 bore, 19.7-1 pistons, head studs, victor rienz head and intake gaskets, how much boost will it hold, the reason being is i found this on ebay

CUMMINS HX35W Diesel Turbo Charger HOLSET T4 Flange | eBay

dont worry i have been in the fabrication business for 20 years, i can make all the up pipes, mounts, mounting base, all that stuff, i just noticed that the wastegate was set at 20 psi,

Oct 7, 2011 | 04:45 AM

86f250XLT-4x4

Elder User

Joined: May 2011

Posts: 973

Likes: 2

From: Bellefontaine, OH

I'm not sure how well .040 over will do

Oct 7, 2011 | 08:29 AM

Rollin.IH.Coal

Senior User

Joined: Sep 2011

Posts: 205

Likes: 0

From: Camden

well all a 7.3 is, is a 6.9 bored over, not sure how much. but the 6.9 does have a thicker block id hope for 18lbs. idk...
im rooting for you brother, Post pics!

Oct 7, 2011 | 10:02 AM

84-6.9L

Posting Guru

Joined: Feb 2011

Posts: 2,216

Likes: 0

From: Princeton MN

A 7.3 is a 6.9 bored .110 over

Nov 12, 2011 | 08:55 PM

1stgen3rdgendodge

Senior User

Joined: Nov 2011

Posts: 163

Likes: 0

Quote:

Originally Posted by Fireman_dave

Not sure if you got one of those turbo's or not but if you didn't don't. They are a cheap chinese knock off. There are alot of them on ebay being listed as holset turbo's and they are in know way close to being the same spec's or the same quality as a genuine holset turbo. Just some info for ya.

Nov 13, 2011 | 08:48 AM

mistakenID

Posting Guru

Joined: Jul 2004

Posts: 1,627

Likes: 0

From: West Valley Utah

Second what 1stgen above said. Notice the ebay ad doesn't say it's a Holset turbo, the flange will FIT the T4 Holset is what it's saying. Nice play on words to keep them out of trouble.

Nov 13, 2011 | 09:12 AM

1stgen3rdgendodge

Senior User

Joined: Nov 2011

Posts: 163

Likes: 0

I also made the mistake of buying one of those about 3 years ago and running it on my 1st Gen 12V back before I knew better. Ran good for a while. But after only having about 500 miles on it it was in need of a rebuild. Note turbo never saw more than 35psi and was always cooled down before shut down. It was a T3 model by the way.