How much boost
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=126753
Printed Date: 24 Nov 2024 at 10:41am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: How much boost
Posted By: Ronnie
Subject: How much boost
Date Posted: 04 Aug 2016 at 6:28am
|
Will a stock 301 out of a 8010 take.
|
Replies:
Posted By: AaronSEIA
Date Posted: 04 Aug 2016 at 7:45am
Dont know about stock, but 8 years ago the McKimm 180 twin turboed "Power Maxx" was leaving the line under 80 lbs of pressure.
AaronSEIA
|
Posted By: bsallis180
Date Posted: 04 Aug 2016 at 8:21am
|
it will take as much as it can till it breaks... maybe 30psi right way put fire rings in the sleeves and forget about it
|
Posted By: Ronnie
Date Posted: 04 Aug 2016 at 11:06am
I'm making 40 pounds.
I think I will open the waste gate and keep her around 25
|
Posted By: 200 allis
Date Posted: 04 Aug 2016 at 12:12pm
|
I have a 200 makes 60 psi boost and isn't fire ringed and a friend of mine is running a 190 with 80 pounds with out fire rings
|
Posted By: Ronnie
Date Posted: 04 Aug 2016 at 1:18pm
|
200 allis are u runing factory head bolts and torque speck
|
Posted By: 200 allis
Date Posted: 04 Aug 2016 at 4:10pm
|
Stock head bolts over torqued a Lil. Left rocker arm assembly off and torque with all short bolts. Then put rocker arm assembly back on and torque it down. Plugged block heater in over night and retorqued.
|
Posted By: O.P.S. Heads
Date Posted: 04 Aug 2016 at 6:50pm
The boost is a factor but not the only factor. How much power you develop is a much bigger deal. You can make 200 HP with 60 lbs. of boost or you can make 800 HP with 50 lbs. All depends on the setup. I would be certain that your connecting rods are hardened first. the softer OEM rods will bend before the head gasket blows if they are not heat treated.
I think a better way to describe performance is to give the weight of the tractor and in what gear you can spin it out - finish the run in. That is a more accurate way to describe how good the engine is and the stress that is applied to it.
|
Posted By: Ronnie
Date Posted: 05 Aug 2016 at 7:24am
|
200 allis do u have hardens rods in ur engine and what weight class do u run.
|
Posted By: 200 allis
Date Posted: 05 Aug 2016 at 9:34am
|
My rods are hardened but the 7000 series rods were harder then 3# series. I have been running 7500 and 8500
|
Posted By: DrAllis
Date Posted: 05 Aug 2016 at 11:53am
|
On the 426 small pin rods, if they said JAPAN on them, there were better than newer generation rods.
|
Posted By: Ronnie
Date Posted: 05 Aug 2016 at 12:49pm
I think I will just back my boost down some so i dont break any thing.
So what would it cost to get rods hardend
|
Posted By: 200 allis
Date Posted: 05 Aug 2016 at 4:44pm
|
Max Simpson did my rods but don't think he is doing it any more. What timing u running makes big difference.
|
Posted By: Ronnie
Date Posted: 05 Aug 2016 at 4:48pm
|
Just under stock timing for this moment
|
|