Drivetrain ARP head studs worth it?
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Want vs need....
So many performance parts are sold on owners desire to have "the best" when the stock has NEVER shown an issue. I bet the ARP are stronger in every way....but simply new quality headbolts are fine for 99% of the folks here.....
I would suggest (IMO) that reusing stock bolts are an iffy thing....a good eye might be able to spot elongation/stretching....but if in doubt, just junk them.
So many performance parts are sold on owners desire to have "the best" when the stock has NEVER shown an issue. I bet the ARP are stronger in every way....but simply new quality headbolts are fine for 99% of the folks here.....
I would suggest (IMO) that reusing stock bolts are an iffy thing....a good eye might be able to spot elongation/stretching....but if in doubt, just junk them.
#6
ARP head bolts are EXCELLENT. the advantage of using them is that they wont stretch. stock bolts will stretch. PLUS you are not supposed to reuse stock bolts because when they are torqued down they stretch a little. so it is recommended that you get either new OEM bolts OR ARP because they wont stretch unless you are running really high boost 34psi +
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ARP studs are a must for higher HP applications. Are they good? Yes, every race team in many motor sports use them for a reason. OEM bolt are one time use torque to yield, stretch are not that strong. If your putting a new head on your car with a new head gasket they are cheap insurance over weaker OEM bolts.
#15
You could but why bother? $180 for ARP, subtract $35 for the factory bolts youll have to buy to replace them with is $145. Replacing the studs one at a time might keep you from having to replace the head gasket on the N14 but if it leaks... now your looking at cam bolts, head gasket, having to retime the engine, yada, yada. Not really worth it with what can go wrong. Or are you planning an N14 to N18 engine swap?
#16
You could but why bother? $180 for ARP, subtract $35 for the factory bolts youll have to buy to replace them with is $145. Replacing the studs one at a time might keep you from having to replace the head gasket on the N14 but if it leaks... now your looking at cam bolts, head gasket, having to retime the engine, yada, yada. Not really worth it with what can go wrong. Or are you planning an N14 to N18 engine swap?
Nothing cast in stone, as my n14 is so new and fresh
Planning to push it hard but not not to destruction, was considering the studs as insurance but need to see extensive reuse as you have pointed out for the math to work
I've got Rcz r lump on ice
It seems too much of of a project to swap out completely at this stage
Perhaps if a cost effective stand alone was available
Manifold and turbo swap seem to be the low hanging fruit, and will happen soonish
But the bottom end seems to be where most of the goodness is
Happy to enjoy the journey before trying to build a monster in one hit
Last edited by blue al; 07-07-2018 at 04:18 AM. Reason: Other bits to finish 1st including brake upgrades
#17
the big deal is: They are re-usable vs the 1x only use stretch bolts.......now take the costs into account and you have your answer (even if you run lower boost)
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