Just a thought here are these stretch bolts are can these be reused? Just torqued down more or?

ARP can be reused I know.

Is it worth just binning them for the sake of it?

Jon.

 

think most re use

 

Cheers just the standard ones can reuse?

So they arn't the stretch type head bolts? Sweet.

 

vaguely remember seeing api david post up that they re use them.

 

I have a spare set of APR ones it you want

Mark A

 

What Engine Jon?

BIG difference in reusing a set of bolts on a stdish engine to a big boost engine.

Rob

 

Mildly modified Rob nothing major. Standard WRX engine with 300bhp max.

Reuse them then and torque them upto standard or give them another 45 deg turn ontop of the recommended engine torque for head gaskets?

How much Mark? Only for the runaround Impreza whilst mine will be off the road.

Cheers.
Jon.

 

Note to say big boost I would be using the ARP anyway as before. Just out of interest on the standard engines.

Jag engine is stripped and uses stretch bolts to achieve the required compression so was enquriing out of interest if the Subarus were the same.

Cheers!
Jon.

 

Trying to get close what I paid in the states for them $140

Mark A

 

Re-use unless there is damage on the threads, Light oil under the head to allow ease of torquing.

Do not exceed stated figures like give them an extra 1/4 turn or +ten ft lbs; they do their job best at the correct setting.

Anyone who sells you a head bolt change on a Subaru engine is just running the bill up - IF they actually fit them - how would you tell?

Unless of course you are substantially increasing the expected power output - in which case studs every time.

David APi Engines / APi Impreza

 

Dissagree on studs, mine is fine at high boost on bolts.

I agree though, how would you tell? like how would you tell the gearbox and diff oil had been changed or that you had a new flywheel or steel rods or....

I reuse em pretty much every time, but i have had bolts snap when undoing on stdish cars, For the sake of £60 i changed em on my own engine.

Rob

I would also use correct lubricant rather than light oil under the bolt/nut washer, this will give more consistant torque across all the bolts IMHO

 

agree until a different person/garage work on the car...................currently got a 300ZX t/turbo (i know, i know but someone had to!!) in the w/shop that had £1500 worth of clutch and flywheel mods done!!
(NOT BY US i hasten to add)

stripped today to find a problem with the transmission to find very poor mismatched, and std parts...................the customer is understandibly impressed!!

alyn

 

It is always hard to tell people though isnt it, even more so when they have spent considerable ammounts of money on things that havent been done.

Do you do Z's as well then? I have a friend up your way who may need your help

Rob

 

don't normally, friend of one of my "EVO" customers..............

to be honest with the amount of non-scoob (Evo, GTiR, Supra, etc.) work we have done lately, its getting like "anything goes"..............seems there aren't many people actually prepared to work on anything other than Shopping cars round our way, so we end up with it!!
if your man's local get him to call in and i'll see if i can help

alyn..............

 

Cheers Alyn

Rob

p.s. Jon, saw your car this morning... did u get my text?

 

Thanks guys!

No Rob txt it to 07740047043 mate as other phone got stolen.

Lost your number. Send me a txt and ill update it

 

Still have them case bolts building a 04or 05 ej257 for a buddy

 

Unlikely seeing as that post is 14 and a half years old mate.

WOW.