ARP Head stud set wanted
- Thread starter Thor
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webadmin
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Hi Sascha,
From experience, you would be better off with a standard set of head bolts. The arp have a habit of lifting.
The standard ones are good for 550bhp, probably more.
From experience, you would be better off with a standard set of head bolts. The arp have a habit of lifting.
The standard ones are good for 550bhp, probably more.
red reading
Active Member
620bhp has been achieved on stock head bolts, mazworxs do a special head stud kit that is the next best to fit after that, stock of the shelf arp head studs are shite they have less thread to purchase in the block than standard head bolts.....not good! They also torque up un evenly due to the fact they do not bottom out in the block correctly and then move whilst being torqued up.
red reading
Active Member
Dan fennals head lifted, pesh 2.4 stroker engine had arp studs and the head gasket failed numerous times....it's now running perfectly with standard head bolts in mark turbos car, rich redline head gasket leaks,
i would not say arp stuff is shite, it is just these bolts don't seem to have been designed for the engine, they make other studs for nismo and mazworxs which are fine in our engines but they are a differant design., Just my 2p worth.
i would not say arp stuff is shite, it is just these bolts don't seem to have been designed for the engine, they make other studs for nismo and mazworxs which are fine in our engines but they are a differant design., Just my 2p worth.
Mad
Well-Known Member
As red reading said, my head lifted using Arp Studs. Bad design fault on the gtir as they seem to work well on other cars.
Im now running just over 550bhp and the standard ones are working just fine so would recommend them. When I went to buy some, I struggled finding them in main dealer uk so you might have to shop around to find a set as there was a back order.
Im now running just over 550bhp and the standard ones are working just fine so would recommend them. When I went to buy some, I struggled finding them in main dealer uk so you might have to shop around to find a set as there was a back order.
Mad
Well-Known Member
Stu let me have a set of spare ones that he had on the shelf but I shopped around the dealers for the head bolts. £160 ish rings a bell but I can remember exactly how much.
I think Eric's in the US may sell them too.
You can get hold of Blueprint Head Bolts too but I have no experience of them. Some say that you can use head bolts a second time but personally I would always buy new.
With regards to head gaskets, I use a Cosworth, 1.8mm I think. Cant remember where I got it from but if you type into google Cosworth head gasket SR20DET there are a few options for UK companies. The Cosworth hg has worked well, If I remember rightly you have to modify the gasket slightly as it is for a 200sx but nothing major.
There are probably other alternatives to Head Gaskets too. Previously I ran a 1.2mm Tomei.
I think Eric's in the US may sell them too.
You can get hold of Blueprint Head Bolts too but I have no experience of them. Some say that you can use head bolts a second time but personally I would always buy new.
With regards to head gaskets, I use a Cosworth, 1.8mm I think. Cant remember where I got it from but if you type into google Cosworth head gasket SR20DET there are a few options for UK companies. The Cosworth hg has worked well, If I remember rightly you have to modify the gasket slightly as it is for a 200sx but nothing major.
There are probably other alternatives to Head Gaskets too. Previously I ran a 1.2mm Tomei.
Makaveli_se7en
Member
Yes they're 1/2". I don't think they would work full stop, there wouldn't be enough material removed to completely take out the original threads.
I reckon EJ20 14mm head studs could be made to work. The lengths are correct, its just whether removing that much material from the block/head would cause issue.
I recently dropped my engine off at the builders and had the old "what head studs to use" conversation. The guy I spoke to was a very experienced engine builder and said there was nothing wrong with the ARP studs. He then showed me the ARP catalog and pointed out that there are rnn14 specific ARP head studs and normal sr20 ones as well. He said the problem is that they are not being fitted properly or the wrong studs are being used (normal sr20 ones).
I am not saying you guys that have had bad luck with them have fitted them wrong. Is it not possible they could have been ment for a silvia or 200sx ect
I am not saying you guys that have had bad luck with them have fitted them wrong. Is it not possible they could have been ment for a silvia or 200sx ect
red reading
Active Member
The differance between the two is rnn14 are m12 and 200sx etc are m10.....one will not fit the other at all, the issues with rnn14 specific head studs have been covered in previous posts....the stud is the problem as the thread is to short on the stud and the studs do not bottom in the block......all the other types mentioned work very well and are a much better design.
How many gti-r engines has he built with arp head studs?
johnny gtir
Well-Known Member
Arp are not suitable on our blocks I would stay well clear seen a fail and read all the above fails jon if you hit a brick wall with back order from Nissan for any reason and needed them any time I have a new set unused in there boxes and I could wait for the back order. only gasket I have is a cosworth which has been bolted down but never ran people say its fine to use but I am not 100% convinced on that
am I right in saying where people get confused is arp rod (not head) bolts are fine and often used ?
am I right in saying where people get confused is arp rod (not head) bolts are fine and often used ?
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