Author	[Modern View]
OL-88 07-13-2012 08:51:13 97.81.32.73 Report to Moderator	oliver 88 puller 400 HP with 30.5-32s. pulls 5000 and 7000 how much tire air psi would you say for a base line. [Reply]   [No Email]
Rwolfejr 07-18-2012 08:04:33 67.163.184.160 Report to Moderator	Re: Tire psi. in reply to OL-88, 07-13-2012 08:51:13   I too apologize... I'm sure you're aware of the loss of bar when over inflated... and cupping if under inflated. And the type of track and tread bar design will play in the game as well. And bar height vs. wheel speed and ability to pack and so on... So the only tid-bit of potentially useful information I can throw out there would be this... Start out a lot harder than you think you need to be. Always easier to drop pressure than to pump 'em up while you're at the pulls. Are you running the pulling tires that look like a round ratchet rack like what Firestone offers up for pulling... or are you running ag tires? If they're the high wheel speed continuous tread deal then I'd look on the website of manufatcuter and see if they suggest any pressure. Or better yet call them and pick their brain. If they're ag's and you're running lower speeds I'd say 3 is way too low for that big rubber. Even as stiff as they are on their own you'd still let the bars roll at just 3 psi. Slower speed... cut... big ag's... I'd start at 10-12... My humble opinion. [Reply]  [No Email]
gtx1967jewison 07-16-2012 17:23:26 174.253.132.67 Report to Moderator	Re: Tire psi. in reply to OL-88, 07-13-2012 08:51:13   Well I should apologize for you taking it as an insult, it was not intended to be. I just would lay alot of $ down that it ain't anywhere near that on a Dyno. Its none of my business anyhow I guess. As for the tires 3psi sounds Extremely low? There are 850 cube propane Molines souped up Alot that barely put out 200 hp. [Reply]  [No Email]
OL-88 07-16-2012 18:49:44 97.81.32.73 Report to Moderator	Re: Tire psi. in reply to gtx1967jewison, 07-16-2012 17:23:26   big moline,2100 rpm = 200 hp, Double the rpm (without large chunks of cast iron flying all over town)6-700hp if built right.RPMS make power! Ask any race engine builder. [Reply]  [No Email]
OL-88 07-16-2012 14:53:53 97.81.32.73 Report to Moderator	Re: Tire psi. in reply to OL-88, 07-13-2012 08:51:13   All I wanted was some advice,thats all .But no I get insults,Real nice. And yes this engine is balanced,blueprinted,ported and flowed head Custum built Header and sheet metal intake. 13:-1 comp. very big cam and all the best parts .At 4500-5000 rpm it will put out 400hp with ease. [Reply]  [No Email]
Dodgeit 07-16-2012 10:37:34 65.199.61.227 Report to Moderator	Re: Tire psi. in reply to VicS, 07-13-2012 08:51:13   Quoting Removed, click Modern View to see Wow 1.29 HP per original cube in a farm tractor, is pretty good doing, even with 400+ cubes. What you have to do? Turbo(s)? Gas? Propane? 6000+ rpm? Heads and cam are a given. Bored and stroked too, probably. How is the transmission and rear ends holding up? You commission the build or you buy it already finished? Care to show some pics? [Reply]  [No Email]
OL-88 07-16-2012 07:36:05 97.81.32.73 Report to Moderator	Re: Tire psi. in reply to OL-88, 07-13-2012 08:51:13   I was told many years ago to use about 3 psi., but I thought I would ask just for some opinions, An as for you GTX BOY you know NOTHING about this tractor,OR a full race built/PRO stock tuned BIG cube 310!!! SO ,,you keep pickin your A$$ and think how you will NEVER have a CLUE!! [Reply]  [No Email]
Rwolfejr 07-16-2012 06:55:19 67.163.184.160 Report to Moderator	Re: Tire psi. in reply to Cody, 07-13-2012 08:51:13   Quoting Removed, click Modern View to see Maybe a V8? I was wondering how a person could have the ability to make 400 hp on an old tractor... and make the mod's for combine tires... and who knows what all else... And then not have a clue or a rough idea where to start with tire pressure...? [Reply]  [No Email]
gtx1967jewison 07-15-2012 18:57:10 174.254.240.231 Report to Moderator	Re: Tire psi. in reply to OL-88, 07-13-2012 08:51:13   400 hp my A$$. [Reply]  [No Email]