This site is not affiliated with AGCO Inc., Duluth GA., Allis-Chalmers Co., Milwaukee, WI., or any surviving or related corporate entity. All trademarks remain the property of their respective owners. All information presented herein should be considered the result of an un-moderated public forum with no responsibility for its accuracy or usability assumed by the users and sponsors of this site or any corporate entity. | ||||||
The Forum | Parts and Services | Unofficial Allis Store | Tractor Shows | Serial Numbers | History |
AC7 Turbocharger |
Post Reply |
Author | |
Larry F
Bronze Level Joined: 22 May 2011 Location: Denver Points: 4 |
Post Options
Thanks(0)
Posted: 22 May 2011 at 3:38pm |
Can I use the 74029309 Turbo in place of the 74027204. The manual calls for the 27204 which I can not find. I have located the 29309. The 29309 is for a later serial nubered engine. This is on a AC 7gb craller. This is information from the manual. The engin serial number is 3D12351.
Thanks in advance.
|
|
Sponsored Links | |
Dnoym N. S. Can.
Orange Level Access Joined: 03 Oct 2009 Points: 544 |
Post Options
Thanks(0)
|
UA33002 TurbochargerNew T04B90 ModelReplaces number D4029309, 74029309, 74029207,74036513, 74062751, 84062751, 409080-5009 Includes Mounting Gaskets (T04B90 Model) Fits: 7030, 7040, 7045, 7050, 7060, (210, 220, D21 Air Research Replacement) BOLT ON REPLACEMENT FOR AIRESEARCH. IF REPLACING RAY JAY TURBO, LINES & AIR TUBE NEED TO BE CHANGED OR MODIFIED. Larry i could not find anything on that tubo number 74027204.maybe someone else can help you hth B:-) Dnoym |
|
DrAllis
Orange Level Access Joined: 12 Sep 2009 Points: 19641 |
Post Options
Thanks(0)
|
If your old turbo is an "AirResearch" brand it probably has a V-clamp holding the compressor housing to the center section. The newer AirResearch turbo doesn't have the V-clamp, but is bolted. They will interchange with a little hardware modification on the oil lines and the rubber hose that connects the air inlet (newer turbo is about an inch shorter). If your old turbo is a "Thompson" or "Rajay" brand, the newer model will also work but you will have to be more creative on your oil lines.....like maybe use a hose for oil return and make a supply line from copper tubing and brass compression connections and fabricate a crossover tube to the intake manifold as well.
|
|
Larry F
Bronze Level Joined: 22 May 2011 Location: Denver Points: 4 |
Post Options
Thanks(0)
|
DrAllis
My Turbo is bolted and has no V clamp. It sounds as if it may have had a new tubo installed at some point. It appears as though the 74029309 replacement will work and I may or may not need to modify the air and oil line. Thank you for the reply.
Larry
|
|
Larry F
Bronze Level Joined: 22 May 2011 Location: Denver Points: 4 |
Post Options
Thanks(0)
|
DrAllis
In addition the old turbo is an Airesearch with no v clamp.
Larry
|
|
DrAllis
Orange Level Access Joined: 12 Sep 2009 Points: 19641 |
Post Options
Thanks(0)
|
Then, they may be indentical except for the exhaust housing size/ratio....usual size is a .96 A/R and other sizes make be .84 A/R or .81 A/R.....the smaller numbers are tighter and allow the turbo to "spool up" at a slower RPM. Farm tractors use .96 and spool up at 1700 RPM and high idle at 24-2500 RPM. The size number is stamped on the exhaust housing somewhere is you are able to read it....sometimes inside where the exhaust housing bolts to the manifold.
|
|
groanwow
Bronze Level Joined: 12 Apr 2012 Location: Australia Points: 2 |
Post Options
Thanks(0)
|
My knowledge about turbochargers is very poor...thanx for the great post...
It was very informative and useful....
|
|
Post Reply | |
Tweet
|
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |