my cometic gasket must be blown how much is mountune ones
26-01-2007, 05:50 PM
#42
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Originally Posted by abdr500
madevelopments
i will find out tomorow i buy my things from burton power in ilford
i will find out tomorow i buy my things from burton power in ilford
Dont belive people who tell you they are the same as for one they wont have this part no for one.
Mark
how fortunate for me you checked them before i put them in 
26-01-2007, 06:22 PM
#45
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Originally Posted by abdr500
i c will have to go now and have a look
may be this is my problem
may be this is my problem
Mark
26-01-2007, 06:52 PM
#46
Originally Posted by wes
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.
strange that cos ive done over 35k with my stud and nut kit and only a grp a gasket at 35psi
26-01-2007, 06:57 PM
#47
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just had a look at a old head bolt i had around not out of my engine but from same suppley and thers only 3 numbers nothing like the above
26-01-2007, 06:59 PM
#48
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Originally Posted by abdr500
just had a look at a old head bolt i had around not out of my engine but from same suppley and thers only 3 numbers nothing like the above
Mark
26-01-2007, 07:13 PM
#50
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copy head bolts getting sold as genuin one hope fully this is only my problem head lifted or blown gasket so in your opinion could the proper cosworth head bolts be ok for 500 bhp with a wrc 4 layer gasket
26-01-2007, 07:14 PM
#51
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Originally Posted by abdr500
madevelopments
yes you are right
yes you are right
Mark
26-01-2007, 07:15 PM
#52
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I cant tell you if they last like this as I dont do it like that but they are a few people out there with a real 500hp+ and not having problems.
Mark
Mark
26-01-2007, 07:18 PM
#53
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Originally Posted by madevelopments
I cant tell you if they last like this as I dont do it like that but they are a few people out there with a real 500hp+ and not having problems.
Mark
Mark
26-01-2007, 08:56 PM
#56
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MMMMm good reading this , just looked out my head bolts there for my car that i just ordered from pj , they say 10.9 on them 
so are these shite ?
Please tell me its not true lol
so are these shite ? Please tell me its not true lol
26-01-2007, 09:01 PM
#57
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For me any bolt no matter who they come from if it does not say either KXA1000 or KX1000 I would not use,
People will say they are made on the same line as the stock ones but it does not have the same part no so I would never use them,
You can still buy the proper ones from Cosworth.
For me its either right or wrong there is no in between.
Mark
People will say they are made on the same line as the stock ones but it does not have the same part no so I would never use them,
You can still buy the proper ones from Cosworth.
For me its either right or wrong there is no in between.
Mark
26-01-2007, 09:22 PM
#61
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Originally Posted by glancy2081
the 10.9 number is the grade of steel the bolts are made of not a part number is this the same grade as cosworth bolts anyone know
Mark
26-01-2007, 09:31 PM
#64
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thanks 
Looking at woodford garages head bolts there , says genuine cosworth parts , would these be the right ones (kx) i will phone and ask anyway if no one no`s
cometic gaskets getting used through out so would be only right to put they better bolts in , nothing big powered from me just a good stage 3
Would hate to have read this after putting them in , going to look out my old ones to see what they say
Looking at woodford garages head bolts there , says genuine cosworth parts , would these be the right ones (kx) i will phone and ask anyway if no one no`s
cometic gaskets getting used through out so would be only right to put they better bolts in , nothing big powered from me just a good stage 3 Would hate to have read this after putting them in , going to look out my old ones to see what they say
26-01-2007, 09:34 PM
#66
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Originally Posted by rabmc
thanks
Looking at woodford garages head bolts there , says genuine cosworth parts , would these be the right ones (kx) i will phone and ask anyway if no one no`s
Cosworths website would be the same bolt probably
Would hate to have read this after putting them in , going to look out my old ones to see what they say
Looking at woodford garages head bolts there , says genuine cosworth parts , would these be the right ones (kx) i will phone and ask anyway if no one no`s
Cosworths website would be the same bolt probably
Would hate to have read this after putting them in , going to look out my old ones to see what they say
as other people use but I said I dont 
and wont so I buy my bolts from Cosworth.Mark
26-01-2007, 09:39 PM
#68
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So did we decide whether the ARP stud and nut kit are any good then? I went to ARP at the time cos I was under the impression that this was the way to go......
26-01-2007, 09:40 PM
#69
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when i spoke to cometic at autosport show last year they said do not use
arp stud and nut with there head gaskets because they cause them to
crack i was thinking of fitting rerriday copper head gasket has anyone
used one
arp stud and nut with there head gaskets because they cause them to
crack i was thinking of fitting rerriday copper head gasket has anyone
used one
26-01-2007, 09:48 PM
#72
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Originally Posted by JjCoDeX75
So did we decide whether the ARP stud and nut kit are any good then? I went to ARP at the time cos I was under the impression that this was the way to go......
Mark
26-01-2007, 09:51 PM
#73
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Originally Posted by madevelopments
Originally Posted by JjCoDeX75
So did we decide whether the ARP stud and nut kit are any good then? I went to ARP at the time cos I was under the impression that this was the way to go......
Mark
)JJ
26-01-2007, 10:30 PM
#74
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Originally Posted by Fiecos Dan
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.
26-01-2007, 10:45 PM
#75
Originally Posted by madevelopments
Originally Posted by rabmc
thanks
Looking at woodford garages head bolts there , says genuine cosworth parts , would these be the right ones (kx) i will phone and ask anyway if no one no`s
Cosworths website would be the same bolt probably
Would hate to have read this after putting them in , going to look out my old ones to see what they say
Looking at woodford garages head bolts there , says genuine cosworth parts , would these be the right ones (kx) i will phone and ask anyway if no one no`s
Cosworths website would be the same bolt probably
Would hate to have read this after putting them in , going to look out my old ones to see what they say
as other people use but I said I dont and wont so I buy my bolts from Cosworth.Mark
27-01-2007, 09:30 AM
#76
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Originally Posted by rapidcossie
Originally Posted by Fiecos Dan
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.
Are you gonna leave 2 out then?
27-01-2007, 10:27 AM
#78
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i've just checked my spare head bolts sets,that i've had for 3+ years.
one set from Burton power, 1 set for Rally Design, all are 10.9 bolts.#
i always believed std head bolts on 400+ bhp cars crack the blocks.
one set from Burton power, 1 set for Rally Design, all are 10.9 bolts.#
i always believed std head bolts on 400+ bhp cars crack the blocks.
