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Author: Subject: are ARP big end bolts a worth while investment??
will121

posted on 27/10/09 at 10:13 PM Reply With Quote
are ARP big end bolts a worth while investment??

im building a tuned 2litre silvertop zetec hoping for about 175bhp and reving to 7k, ive heard that the zetec botom end is quite strong, but are 60 of ARP big end bolts necessary or just a good preventative investement?

Whats everyone using??

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givemethebighammer

posted on 27/10/09 at 10:39 PM Reply With Quote
I bought my zetec ones from http://www.northbridgemotorsport.com/

The caps didn't needs reaming (arp bolts would have required this)

I've done lots of track days and generally abused the engine and nothing has let go yet.

I guess while the engine was out it was a quick insurance measure to fit.

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turbodisplay

posted on 27/10/09 at 10:51 PM Reply With Quote
What about using 12.9 bolts?
I doubt you will see any increase in reliability than arp bolts.
Darren

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zetec

posted on 27/10/09 at 11:00 PM Reply With Quote
f you are going to keep the revs to 7K then I would say no need, it is the revs that puts the stress on the bolts rather than power output. I have a soft rev limiter set to 7300 and hard cutoff at 7500. I use it quite hard on the road and 8k miles later still OK. Remember original are stretch bolts so no reusing.





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jeffw

posted on 28/10/09 at 06:18 AM Reply With Quote
I have a brand new set of ARP rod bolts still in their packaging (unopened) for sale. 55 inc postage.






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whitestu

posted on 28/10/09 at 08:50 AM Reply With Quote
My blacktop has been to 8k accidentally and 7800 regularly on standard bolts with no probs.

I am tempted to get some ARPs though to be safe.

Stu

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Danozeman

posted on 28/10/09 at 09:59 AM Reply With Quote
Iv put arp bolts in mine to be safe. It does rev above 7k. Big end bolts are a weak point on a zetec engine.

My big end caps didnt need reaming either which they say they might.





Dan

Built the purple peril!! Let the modifications begin!!

http://www.eastangliankitcars.co.uk

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