Pulling Forum - Twin turbo

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Twin turbo

Printed From: Unofficial Allis
Category: Other Topics
Forum Name: Pulling Forum
Forum Description: Forum dedicated to Tractor and Garden Pulling
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=149276
Printed Date: 04 Nov 2025 at 2:06am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Twin turbo

Posted By: 200 allis
Subject: Twin turbo
Date Posted: 08 Apr 2018 at 8:29am

Has anyone run twin turbo set up on the 301 here. If so turbo size were used?

Replies:

Posted By: DrAllis
Date Posted: 08 Apr 2018 at 9:47am

What size do your rules allow ?? How much fuel delivery do you have ?? are RPM's open or limited ?? We used to run a TV77 on top of a 3LM466 with about 400 cc's of fuel with open RPM's many years ago. Worked quite well and I suppose the HP was in the 600 to 700 ish range ?? Now we must run a max of 3 inch air inlet and the fuel is double and the HP is around 1200.

Posted By: 200 allis
Date Posted: 08 Apr 2018 at 11:12am

I think im switching div. Rules are pretty open. I still running roosa ed did i believe 400cc going bump rpm up was thinking 35 3800

Posted By: DrAllis
Date Posted: 08 Apr 2018 at 1:04pm

When we first went to twins, we had been running 7th gear in the 6700 lb class with a 190/200 chassis. Adding the TV77 (or an S-3) on top of the 3LM466 allowed us to shift up into 8th gear. This was with 24.5 x 32 tires and open RPM.

Posted By: 200 allis
Date Posted: 08 Apr 2018 at 2:28pm

Were able to keep it all under hood with out notice.

Posted By: DrAllis
Date Posted: 08 Apr 2018 at 4:37pm

That is a question??? No bubble in the hood, but inlet and exhaust went out thru the hood sides. If you are trying to hide twin turbos so no one knows you have them, good luck with that idea.

Posted By: 200 allis
Date Posted: 08 Apr 2018 at 5:51pm

Thank u for info dr