Can Arp Big End Bolts Be Fitted In Situ?

[Stu 18]

Howdoo peeps,

 

Ive got a PeterT stage 1 inlet and chip fitted now, with the increased rev limiter, and im starting to get a little worried about one of the stock big end bolts letting go at these sort of RPM's.. So, im wondering if it might be worth investing in a set of ARP big end bolts to set my mind at ease.

 

Sooo.. can the ARP's be fitted in situ? Or will the pistons/rods have to come out to fit them?

[welshpug 1,661]

just need to drop the sump off to fit them.

[Doof 11]

Yea, you just need the sump off, then you can turn the engine over to gain access to each rod when its at BDC. Check this installation information out http://www.arp-bolts.com/Tech/TechInstall.html

[fiji bob 0]

im sure i remember having to have a bit of machining done on the rods/caps for the bolts when i had mine fitted

[Stu 18]

Anymore for anymore?

[Craigb 2]

How do you get the old bolts out ?

[sorr 0]

How do you get the old bolts out ?

 

A swift whack or two with a hammer. Although I left the nut on sitting proud of the bolt to save mashing the threads.

[nick 3]

As mentioned above, I'm sure you have to put a chamfer on the hole in the rod with ARP's, so yes new bolts can be fitted in situ but not ARP's.

 

Nick

[Stu 18]

Bugger.. Something else i wish i'd done when i put the engine together.. *sigh*..

 

So, ARP's need the rod machining to accept?

[Anthony 1,003]

So, ARP's need the rod machining to accept?

Usually, yes.

[James_m 0]

As mentioned above, I'm sure you have to put a chamfer on the hole in the rod with ARP's, so yes new bolts can be fitted in situ but not ARP's.

 

Nick

 

I didnt No sign of trouble 5k miles on....

[luggy 13]

I didnt No sign of trouble 5k miles on....

[/quote

 

Neither did I, biggest issue I had was taking the old bolts out.

[brumster 135 1 Cars]

Same here - went straight in, no issues (on XU9J4 stock bottom end, though, should they be any different...?)

[fiji bob 0]

it was xu9j4 rods that i had arp bolts fitted to from what i remember they almost fit but probably need slight machining to fit properly