my cometic gasket must be blown how much is mountune ones
23-01-2007, 04:39 PM
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my cometic gasket must be blown how much is mountune ones
ok my car is makeing 500 bhp and 400lbft at 1.9 bar how ever the cometic gasket has blown.what other gasket could hold togather mountune ones are proven.and how much are they and is there any others gaskets.as number 2 cylinder is getting water in and white smoke is puffing out
23-01-2007, 04:52 PM
#2
Re: my cometic gasket must be blown how much is mountune one
Originally Posted by abdr500
ok my car is makeing 500 bhp and 400lbft at 1.9 bar how ever the cometic gasket has blown.what other gasket could hold togather mountune ones are proven.and how much are they and is there any others gaskets.as number 2 cylinder is getting water in and white smoke is puffing out and i am
did you deck both the head and block on instalation?
mountune one will also blow if you dont do that.
23-01-2007, 04:59 PM
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Originally Posted by abdr500
Franco
no not long studed std head bolts
no not long studed std head bolts
23-01-2007, 05:00 PM
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Well all i can say mate is that i believe Martin H run surplus 500bhp with a wire rung block & grpA on for a few yrs, so somethings amiss!
long studding may be the answer.........
Good luck find the fault though, but the headgasket itself may not be the answer!
I'm sure some of the night time guru's will be able to shed some light on this for you!
long studding may be the answer.........
Good luck find the fault though, but the headgasket itself may not be the answer!
I'm sure some of the night time guru's will be able to shed some light on this for you!
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23-01-2007, 05:15 PM
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Originally Posted by Franco
Well all i can say mate is that i believe Martin H run surplus 500bhp with a wire rung block & grpA on for a few yrs, so somethings amiss!
23-01-2007, 05:20 PM
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I know quite a few people running wire rung blocks and not having a problem on a standared gasket,
I ran one for 5 years using nitrous and never had a problem
The only cometic gasket i use is the inlet manifold one,
I ran one for 5 years using nitrous and never had a problem
The only cometic gasket i use is the inlet manifold one,
23-01-2007, 05:55 PM
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the bolts themselves WON'T be the problem,they can last far beyond 500bhp,but there may have been a fault somewhere on installation etc.
WRC is the best bet,but wire ringing is good too if done properly,
It's just as important to put the parts together properly,as have the proper parts themselves
WRC is the best bet,but wire ringing is good too if done properly,
It's just as important to put the parts together properly,as have the proper parts themselves
23-01-2007, 06:18 PM
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i have fittd every thing 100% so must be gasket or crack some were if it is i will use wrc 4 layer and 6 long stud and 4 std head bolts
23-01-2007, 06:42 PM
#21
Originally Posted by abdr500
i have fittd every thing 100% so must be gasket or crack some were if it is i will use wrc 4 layer and 6 long stud and 4 std head bolts
However, you need to post up a picture of the failed item in position, and we should be able to see why it failed.
Good power by the way
.
23-01-2007, 07:06 PM
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Mike Rainbird
thanks to you i have that power wheel spins in forth gear . and there more to come as that was only 1.9 bar will push it to 2.2 bar
thanks to you i have that power wheel spins in forth gear . and there more to come as that was only 1.9 bar will push it to 2.2 bar
.
23-01-2007, 08:26 PM
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So when I bought an ARP Stud and Nut kit was this wrong out of interest? Also - what torque should they be set to - not had a problem for a while, but always worth checking!
Also using a cometic
JJ
Also using a cometic
JJ
23-01-2007, 08:44 PM
#28
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i run a group A gasket with wire rung block and 6 long studs.
no hassles at all and thats running 2.5 bar and car has been proven at this power level for 10k miles and 185mph
would change to 8 long studs if i had chance but that about it.
where did the car make the power?
rollers? dyno?
who built engine?
no hassles at all and thats running 2.5 bar and car has been proven at this power level for 10k miles and 185mph
would change to 8 long studs if i had chance but that about it.
where did the car make the power?
rollers? dyno?
who built engine?
23-01-2007, 09:00 PM
#31
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ARP stud + nut kit is a waste of money and will eventually blow the gasket (or worse), they don't "stretch" to accomodate the different rate at which the head (alloy) expands to the block (cast iron) when heated.
Std head bolts are stretch bolts and compensate for this, ford / cosworth knew what they were doing!
i used WRC headgasket + std headbolts with 500bhp and another 75bhp of gas ontop with no problems for 6000 miles, until i missed a gear and bent all my valves
Still no sign of headgasket failiure when it was stripped.
When the engine was 1st built using ARP studs (brand new head and brand new block were used), it lasted 1300 miles (1000 of those running in miles) at 29psi before the wrc gasket failed. I replaced the gasket with another WRC item and used std headbolts (installed to std spec as in the workshop manual) and it was then subjected to 34psi + gas with no problems.
Std head bolts are stretch bolts and compensate for this, ford / cosworth knew what they were doing!
i used WRC headgasket + std headbolts with 500bhp and another 75bhp of gas ontop with no problems for 6000 miles, until i missed a gear and bent all my valves
Still no sign of headgasket failiure when it was stripped.When the engine was 1st built using ARP studs (brand new head and brand new block were used), it lasted 1300 miles (1000 of those running in miles) at 29psi before the wrc gasket failed. I replaced the gasket with another WRC item and used std headbolts (installed to std spec as in the workshop manual) and it was then subjected to 34psi + gas with no problems.
24-01-2007, 01:43 AM
#35
ARP bolts stretch during instalation and potentially can stretch during use, so im not sure where you got that information from!
The "stretch" bolts refer to the fact that tehy go past the point of elasticty and dont spring back again anymore, install a set and take them out and you will see what i mean if you measure them well, where as ARP will pull back to the same size they started at
The "stretch" bolts refer to the fact that tehy go past the point of elasticty and dont spring back again anymore, install a set and take them out and you will see what i mean if you measure them well, where as ARP will pull back to the same size they started at
24-01-2007, 04:14 PM
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Originally Posted by Chip-3Door
ARP bolts stretch during instalation and potentially can stretch during use, so im not sure where you got that information from!
The "stretch" bolts refer to the fact that tehy go past the point of elasticty and dont spring back again anymore, install a set and take them out and you will see what i mean if you measure them well, where as ARP will pull back to the same size they started at
The "stretch" bolts refer to the fact that tehy go past the point of elasticty and dont spring back again anymore, install a set and take them out and you will see what i mean if you measure them well, where as ARP will pull back to the same size they started at
JJ
25-01-2007, 10:46 PM
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There seems to be a lot of people running arp stud and nut and cometic gasket,me being one of them.I am sure the reason behind this is because its a good reliable setup when built correctly.Surely going with whats tried and tested is the best bet.
26-01-2007, 05:30 PM
#39
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Originally Posted by rapidcossie
i run a group A gasket with wire rung block and 6 long studs.
would change to 8 long studs if i had chance but that about it.
would change to 8 long studs if i had chance but that about it.
Thank fu-k you didn't build your engine, yourll'd fit 2 std bolts and 8 long studs.
