Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Tractor Pulling Discussion Forum

Head gasket

Welcome Guest, Log in or Register
Author 
SMTA PULLER

02-19-2005 16:23:41




Report to Moderator

Bore block out to 4.310 Can i run a SM head gasket or need one made up. 5.75 stroke 4.310 bore 12.1 static compression with .073 stock head gasket.




[Log in to Reply]   [No Email]
Clarence Barenie

02-21-2005 15:26:32




Report to Moderator
 Re: Head gasket/RPMS in reply to SMTA PULLER, 02-19-2005 16:23:41  
SMTA
HOW MANY RPM'S ARE YOU GONNA TURN THIS DUKER !
I'm having a hard time with the amount of h.p verses cubic inch. That comes out to 2.686 cubes per pony ! Thats pretty efficient ! Is the entire combustion chamber open on the lp head, no flat spot at all over the piston !
Are you pulling in a low speed limit class !
Also, this counter bore (open) thing is just jacking me up ! You read about denotation, that unburned fuel is just looking for a place to hide !
If an l.p. head is that forgiving, I better get this 450 gas head on ebay !

[Log in to Reply]  [No Email]
SMTA PULLER

02-21-2005 16:42:56




Report to Moderator
 Re: Head gasket/RPMS in reply to Clarence Barenie, 02-21-2005 15:26:32  
All i can tell you is the Lp flows more air then the gas head, and small combustion chamber has more compression.More air,compression,fuel,=HP



[Log in to Reply]  [No Email]
clarence barenie

02-21-2005 04:17:50




Report to Moderator
 Re: Head gasket in reply to SMTA PULLER, 02-19-2005 16:23:41  
one last thing. the super m head gasket has a completely different configuration, than the head gasket needed for the propane head ! combustion chamber is different.
are you going to fill thd gap left where the top of the sleeve use to sit



[Log in to Reply]  [No Email]
SMTA PULLER

02-21-2005 05:29:01




Report to Moderator
 Re: Head gasket in reply to clarence barenie, 02-21-2005 04:17:50  
I run the s-m head gaskit with 4 1/8bore work good.No im not going to put a ring at the top of cly bore.



[Log in to Reply]  [No Email]
ChadS

02-21-2005 08:49:41




Report to Moderator
 Re: Head gasket in reply to SMTA PULLER, 02-21-2005 05:29:01  
The 450 gasket is larger than the SM that is the largest bore gasket IH made for the 281. Now, I think you mite have some trouble sealing it with a stock head gasket. I worked on one last fall that had 4-3/8 bore, 7 in stroke, in a Super M. He had trouble all the time with blowing the gasket between the cyls, with the SM gasket. I made a copper gasket for it and it made too much compression so I went back to the 450 gasket. I was curious at the time to see if there was a difference between the SM and the 450 gasket, and there was. The 450 gasket had about .060 bigger opening on the fire ring VS the Super M gasket. It did overhang the bores, maybe .010, maybe .015, and it also, had an LP head on it. Been together now for 2 seasons, and no signs of trouble yet. Before, it blew a gasket bout every trip down the track. I did not overtorque it, I used coppercoat spray onthe 450 gasket, and it sealed it right up. Had 275 psi of compression. with the copper, it was 305!!!! Barely turned over was so much! ChadS

[Log in to Reply]  [No Email]
Clarence Barenie

02-21-2005 15:18:36




Report to Moderator
 Re: Head gasket/CHADS in reply to ChadS, 02-21-2005 08:49:41  
With the piston coming to the top of the deck, and the head gasket overhang, how did that work out. Wouldn't the piston impact the gasket/head as it heated up ?



[Log in to Reply]  [No Email]
SMTA PULLER

02-21-2005 15:13:59




Report to Moderator
 Re: Head gasket in reply to ChadS, 02-21-2005 08:49:41  
ChadS i call the IH dealer, Parts man said S-M,400,450 was the same part number.Im going to take my old S-M gaskit and see if the IH is a bigger bore in the fire ring.



[Log in to Reply]  [No Email]
ChadS

02-20-2005 07:25:15




Report to Moderator
 Re: Head gasket in reply to SMTA PULLER, 02-19-2005 16:23:41  
It will barely cover it, The fire ring will overhang a bit, not much, but in time, it may pop inbetween cyls. Especially at 12 to 1. Id like to see the pistons too,, Im betting they are aries pistons,, if they dont have 1/2 inch or more dome,, it wont make 12 to 1. LP head,,,, maybe,,,, ChadS



[Log in to Reply]  [No Email]
smta

02-20-2005 10:18:55




Report to Moderator
 Re: Head gasket in reply to ChadS, 02-20-2005 07:25:15  
Piston or arias,dome volume 18 positive cubic centimeters,Top ring 0.509 inch from the top of pinston, comp. height 2.875,Lp head cc at 120,headgasket.073,piston to deck clearance.005 inch, 4.31 bore, 5.75 stroke, = 12.1 Static compression.I will let you guys know how this engine build turns out.And dyno test, Hopeing for 90 HP.Thanks for the info on the head gaskit,Im thinking abought a cooper head gaskit,and more compression.

[Log in to Reply]  [No Email]
ChadS

02-20-2005 17:08:56




Report to Moderator
 Re: Head gasket in reply to smta, 02-20-2005 10:18:55  
SMTA puller, Here is a chart I came up with for a conversion for ratio to pressure. Ive read alot of old engine books, and have seen alot of compression specs, and seems to be kinda close,, not saying it is exact, but close,,, My opinion is that you may hit 90 hp with less compression than you think,, you have the extra cubes from the overbore pistons to compensate. The old rumor of the M&W stroker was around 85 hp,,, and that was a lower compression engine, with a 4.25 bore, and 5-3/4 stroke. I make pistons for the M&W crank, at 4-1/8th bore, and these have domes on the tops,, alot taller than the M&W,, With a stock 400-450 head, Calcualted to be at 10to1(200psi) as a starting point with 5-3/4 crank. HP in the high 80's low 90's if hopped up even more,,, If you get 240 psi,, Id belive you will achive 90 hp+ easily. Better look for a good fuel to run in it. Ethanol seems to love Farmalls,,,,, , ChadS

[Log in to Reply]  [No Email]
SMTA PULLER

02-20-2005 17:50:15




Report to Moderator
 Re: Head gasket in reply to ChadS, 02-20-2005 17:08:56  
Chad did you come up with the venturl part number for the farmall 450. Dome is 3/8 on the aris piston.



[Log in to Reply]  [No Email]
ChadS

02-21-2005 08:38:01




Report to Moderator
 Re: Head gasket in reply to SMTA PULLER, 02-20-2005 17:50:15  
There is 2 of them,,, 47407d27 and 64987d27 the first number is for the 400, the second is for the 450. ChadS



[Log in to Reply]  [No Email]
champspa

02-21-2005 13:13:50




Report to Moderator
 Re: Head gasket in reply to ChadS, 02-21-2005 08:38:01  
where can you buy a venturi for a 450 farmall carb?



[Log in to Reply]  [No Email]
jd b puller

02-20-2005 10:21:38




Report to Moderator
 Re: Head gasket in reply to smta, 02-20-2005 10:18:55  
Be interesting to see what the compression in PSI with a gage is. Never figured out how to convert compression ratio to PSI. The math never works (14.7psi per atmosphere).

Was it exactly 12:1?



[Log in to Reply]  [No Email]
champspa

02-21-2005 13:28:32




Report to Moderator
 Re: Head gasket in reply to jd b puller, 02-20-2005 10:21:38  
the compression on a 450lp being 8.35 according to I H is 186lbs gage. the pressures are listed on Weber's Tractor Service under tune-up info.Useing that the 14.7 to one atmosphere would be 12.65 and using the Ih method which is displacement to combustion cavity it's 8.35



[Log in to Reply]  [No Email]
SMTA PULLER

02-20-2005 12:56:39




Report to Moderator
 Re: Head gasket in reply to jd b puller, 02-20-2005 10:21:38  
Yes Jd B puller 12.1, Camshaft can make a big diffrents in cranking compression.And timeing can also.



[Log in to Reply]  [No Email]
jd b puller

02-20-2005 14:48:07




Report to Moderator
 Re: Head gasket in reply to SMTA PULLER, 02-20-2005 12:56:39  
Sorry if that came out wrong. I wasn"t questioning your compression calculation, just wondering what that converts to in psi.



[Log in to Reply]  [No Email]
Clarence Barenie

02-20-2005 03:10:19




Report to Moderator
 Re: Head gasket in reply to SMTA PULLER, 02-19-2005 16:23:41  
SMTA PULLER : 450 head gasket will work. Are you going to push the pistons out of the block !
must be running a 450lp head, how many cc's did you put in the step on the piston?
THAT'S some big compression, like to here your results when it's all done ! where did you set the top ring ? you'll have to chamfer the top of that piston to clear gasket.



[Log in to Reply]  [No Email]
old_rusty_m

02-19-2005 21:23:32




Report to Moderator
 Re: Head gasket in reply to SMTA PULLER, 02-19-2005 16:23:41  
what kind of pistons did you use?



[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums


Copyright © 1997-2023 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy