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11mm arp headstud options
So looking at 11mm headstud options and there seem to be a few different options and prices.
arp 2000, l19 and 625+ Does anyone have any experience of using these at around 500bhp. I know that a 14mm conversion is ideal but not a viable option at the moment and have seen a few big power builds still using 11mm studs. |
Originally Posted by S744hdv
(Post 12030639)
So looking at 11mm headstud options and there seem to be a few different options and prices.
arp 2000, l19 and 625+ Does anyone have any experience of using these at around 500bhp. I know that a 14mm conversion is ideal but not a viable option at the moment and have seen a few big power builds still using 11mm studs. https://rogerclarkmotorsport.co.uk/s...-head-stud-kit ive also been quoted on the 14mm conversion as its a must at my level. i have just seen these aswell https://www.iagperformance.com/Coswo...p/20043885.htm somebody mentioned that the 14mm is a no no as the machined hole is very very close to the liner which makes sense but if it were an issue why would many companies recommend them? i i have seen some 12mm/14mm studs, is that 12mm into the block and 14mm into the head or vice-versa? |
The arp l19 seem to have a higher rating than the RCM extreme at 260,000 and are a little cheaper so might be the right option for me.
Not sure on the fitment of the 12mm/14mm studs but would require machining so not an option for me at the moment. |
Originally Posted by S744hdv
(Post 12030657)
The arp l19 seem to have a higher rating than the RCM extreme at 260,000 and are a little cheaper so might be the right option for me.
Not sure on the fitment of the 12mm/14mm studs but would require machining so not an option for me at the moment. http://realstreetperformance.com/Sho...205-EJ257.html |
Originally Posted by the shreksta
(Post 12030658)
270,000 psi it says here so a damn good head-stud i think
http://realstreetperformance.com/Sho...205-EJ257.html |
The arp2000 have been used loads at 500 in past. Rcm extreme and cosworth too. the 12/14 stud is drill block but no need for head drilling |
seems like the usual bollox you have been told about 14mm @the_shreksta ............ask a pukka engineering company why every full house build uses nothing but 14mm??
the "extreme" type studs are pretty good but by the time you get to hugely expensive 625 style then the expense is more than simply doing it 'properly' with a 14mm conversion bear in mind a stud is only as strong as the threads in the block |
Originally Posted by stockcar
(Post 12030723)
seems like the usual bollox you have been told about 14mm @the_shreksta ............ask a pukka engineering company why every full house build uses nothing but 14mm??
the "extreme" type studs are pretty good but by the time you get to hugely expensive 625 style then the expense is more than simply doing it 'properly' with a 14mm conversion bear in mind a stud is only as strong as the threads in the block |
I had the l19 on mine and they worked great at 592bhp and over 500lb. Think they are rated to 36psi or there abouts.
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Originally Posted by imprezagaz
(Post 12030846)
I had the l19 on mine and they worked great at 592bhp and over 500lb. Think they are rated to 36psi or there abouts.
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Originally Posted by the shreksta
(Post 12030897)
2.0 or 2.1 / 2.5?
running at 2.1bar on methanol |
2 bar today on meth ( 530 odd lbft ) keep you posted on how long it lasts. Lol
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2.0 will always get a better "clamp" on thinner studs simply because of the relatively small bore compared to a 2.5 which needs all of the help it can .............
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