will121
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| posted on 27/10/09 at 10:13 PM |
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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
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| posted on 27/10/09 at 10:39 PM |
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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
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| posted on 27/10/09 at 10:51 PM |
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What about using 12.9 bolts?
I doubt you will see any increase in reliability than arp bolts.
Darren
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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zetec
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| posted on 27/10/09 at 11:00 PM |
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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.
" I only registered to look at the pictures, now I'm stuck with this username for the rest of my life!"
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jeffw
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| posted on 28/10/09 at 06:18 AM |
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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
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| posted on 28/10/09 at 08:50 AM |
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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
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| posted on 28/10/09 at 09:59 AM |
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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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