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Author Topic:   head gasket # question.
nut3d
Member
posted February 13, 2004 01:46 PM
What is the best head gasket for a 13to1 motor running gas. in 3 races have blowen 3 head gasket's. been useing the fel pro # 1003 gasket. any sugestions on this. also has anybody ever used the gm performance gasket from SDPC #10185054 0.041" Race - Heavy-Duty Small Block Chevy Head Gasket. any thoughts on this. Steve can use your help here on this.
350 chevy 13to compression bought a short block from mid west and put a set of double humps on with 1.94/1.60 vavles in.


tim62
Member
posted February 13, 2004 02:31 PM
If you keep blowing the 1003 gaskets i think you have other problems. Take your heads and block to the machine shop to get the surfaces checked on them. Also what kind of heads bolts are you using and how high is your water temp. running. I have been running 1003 gaskets for about 4 years on high compression and have never had a problem.


ss1515
Member
posted February 13, 2004 02:42 PM
this can happen if your heads have been milled to far.


sdhnc29
Member
posted February 13, 2004 04:50 PM
I have to agree with the previous post's, the head gasket is not the problem, it's something else. Where exactly has each gasket blown? How did the fire ring look on each gasket?

Steve

------------------
Hendren Racing Engines
Rutherfordton , NC
(828)286-0780
Check out my other business at www.solemnvow.com A special thanks to jammin for the awesome job he has done for me on this site!!


nut3d
Member
posted February 13, 2004 05:12 PM
have had the heads and block checked and they are ok. it keeps blowing inbetween the cylenders. useing manly head bolts tourqed to 65 ft lbs. would 85 ft lbs help with this problem.


tim62
Member
posted February 13, 2004 06:48 PM
Are you torquing the heads down in sequence? Are you using any lubricant on the bolts? Is it blowing in the same cylinder everytime? How many times have the bolts been torqued?


nut3d
Member
posted February 13, 2004 07:06 PM
i'm tourque them in sequence. haven't been able to retourque them cuz they blow as soon as i get a run on the motor. normanly it they blow in the middle. yes i am useing a sealent on the bolt's.

[This message has been edited by nut3d (edited February 13, 2004).]

77k
Member
posted February 14, 2004 01:52 AM
Might magniflux block ang heads,could have a hairline crack that dose not show up untill under preasure.


nut3d
Member
posted February 14, 2004 10:35 AM
this is a brand new motor. bought a short block from mid west back in Oct. and haven't been able to run it much. i did a pressure test on the cooling system and it checked out fine couldn't find a leak. gonna pull the heas when it quits rainning.


nut3d
Member
posted February 14, 2004 02:40 PM
I just looked at an old head gasket and found a part number 7733pt2 on it. Is this the 1003 fel pro gasket or is it a differnt one.


rico 08
Member
posted February 14, 2004 03:32 PM
Make sure you run a tap thru the block to clean out all the sealer from the holes and take a grinder with a cup brush to the deck until you can see yourself,and also the bolts,i've been doing this for years and haven't blown one yet.


6pack
Member
posted February 14, 2004 06:37 PM
might be worth your while to check your tune up. it is possible that your head gasket problem is being caused by detonation.
as a matter of interest, is it blowing between #3 & #5.


nut3d
Member
posted February 14, 2004 09:42 PM
i've blowen 1 2 more tat i think are blowen so far in 3 races. first one was on the right bank between 2 and 4. haven't pulled the heads this time to see. do to all the rain i've been getting plus aint got a shop to work in or a lean to.

[This message has been edited by nut3d (edited February 14, 2004).]

Tim Weiss
Member
posted February 15, 2004 10:59 PM
No one has mentioned to recalibrate your torque wrench.


Raz_900
Member
posted February 15, 2004 11:04 PM
I agree with the check the torque wrench and maybe get some ARP bolts.

And the 7733 is Felpro's stock blue stripe gasket. IT IS NOT A PERFORMANCE GASKET!!!! The 7733 gasket is marginal at 10:1 and doesn't stand a snowballs chance in **** at 13:1.

Get a real set of 1003's and try again. If the gaskets don't cost you $60 for the pair, they're not the right ones. The 1003 gasket should be able to take 13:1 without batting an eye.

nut3d
Member
posted February 15, 2004 11:15 PM
i got a set of 1003's today and cost me well over 90 bucks for the pair. would of got them from speedway but can't wait for 4 days just to get them.


nut3d
Member
posted February 16, 2004 06:02 PM
they were 44.88 a peice at the Advance auto parts were i live.


Raz_900
Member
posted February 17, 2004 10:10 AM
wow.. those are some pretty steep prices!!!

Northern Autoparts and Summit both sell them for $30-$35 each. Northern's in Iowa and Summit has warehouses in Ohio and Nevada. So 2 day shipping shouldn't be too bad. $20+ leaves alot of room for shipping charges on a pair of gaskets.



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