colnagowetdream Posted January 26, 2004 Posted January 26, 2004 Just recieved my ARP con-rod bolts (for that 7500 rpm Vx feeling!! and its says on the packaging to "smear anti-scuff paste under the bolt head". What the hell is anti-scuff paste?? Please help the luddite! Quote
stu999 Posted January 26, 2004 Posted January 26, 2004 Oh. My ARP rod bolts came with a little tube of the stuff.... Quote
Eccentric_Rich Posted January 27, 2004 Posted January 27, 2004 Oh. My ARP rod bolts came with a little tube of the stuff.... Well that doesn't really help the man does it! The 'anti scuff' paste is used to reduce / remove the friction between the head of the bolt and the conrod when you tighten them up. This is to ensure the correct and consistent torque and pre-load is applied to the bolts. A good quality engine oil or engine building lubricant will do the job. Richard. Quote
oioi Posted January 27, 2004 Posted January 27, 2004 all ARP bolts should b supplied with ARP lubricating stuff. for tightening sequence see the sbd website Quote
Richard M Green Posted January 27, 2004 Posted January 27, 2004 Also beware that the ARP rod bolts are supposed to be tightened to a specific stretch amount rather than to a torque value!! Quote
stu999 Posted January 27, 2004 Posted January 27, 2004 Well that doesn't really help the man does it! No it doesnt, but it does indirectly suggest that he is missing something that is mentioned in the instructions, and that when I purchased mine that very same something was supplied..... The 'anti scuff' paste is used to reduce / remove the friction between the head of the bolt and the conrod when you tighten them up. This is to ensure the correct and consistent torque and pre-load is applied to the bolts. A good quality engine oil or engine building lubricant will do the job. Not according to the instructions that were received with my bolts. OK, not much help is it So I will expand further. IIRC the instructions even warned against using the 'previous' lubricant that was supplied with ARP bolts, as it could potentially lead to the fitted torque not being correct. Reading between the lines, and even thought logic would suggest otherwise, I guess that engine oil wont suffice..... Incorrectly fitted ARP bolts are probably more likely to fail than standard bolts. So I followed the instructions to the letter, and my advise is for colnagowetdream to go back to his supplier and get the correct stuff, or heed their advise on what to use. A conrod through the side makes an awful mess.... Quote
colnagowetdream Posted January 27, 2004 Author Posted January 27, 2004 Cheers for the advice gents. Upon re-checking the instructions and invoice (purchased from QED) they are listed as "race spec" rod bolts & have LNM003 &NB on the bolt head. Are these bolts the correct ones or have I ordered the wrong ones! Duh!!!My engine will be standard internally and fitted with throttle bodies. Quote
stu999 Posted January 27, 2004 Posted January 27, 2004 Gawd knows.... Dont be shy, ring QED (if nobody else knows here). They are going to be just as keen to ensure that your conrods stay inside your engine..... Nothing wrong with making double sure mate Quote
Richard M Green Posted January 27, 2004 Posted January 27, 2004 I've had a look at my ARP bolts and have checked the ARP catalogue: the number you're quoting (LNM003 &NB) is not an ARP part number. Also, if they are genuine ARP bolts then they'll be stamped as such. Quote
oioi Posted January 28, 2004 Posted January 28, 2004 yep - agree with Richard - ALL (admitedly not many) ARP bolts i have seen have been stamped as such Quote
colnagowetdream Posted January 28, 2004 Author Posted January 28, 2004 Rang QED, they have the bolts manufactured locally and they claim they are of a higher spec than ARP. They advise using cam lube as the anti-scuff stuff. Cheers for all your inputs. Quote
Dave Eastwood (Gadgetman) - Club Chairman Posted January 28, 2004 Posted January 28, 2004 Rang QED, they have the bolts manufactured locally Just curious, but are they selling these as ARP bolts? Or is it just a case of "well, we recommend these sir..." when you ask for the ARPs. Quote
mark.anson Posted January 29, 2004 Posted January 29, 2004 Er according to the SBD website you are supposed to countersink the end caps slightly before fitting ARP bolts. Regarding your "alternative" QED bolts,did you specifically ask for ARP bolts? If you did, send them back to QED and politetly ask them to supply what you asked for in the first place.Can they gaurantee they are of the same quality as ARP bolts. I am the last person to question QEDs knowledge re engines but I cant help being a bit synical when "alternatives" are offered over tried and tested products. Just my 2p. Quote
Westfieldman Posted January 29, 2004 Posted January 29, 2004 Coppied and pasted from Arnies web site Companies who are in my opinion worth steering clear of: Quorn Engine Developments - In my opinion QED have sold several people I know products which were not fit for the purpose described by QED, and indeed I personally have experienced supply of parts not to specification ordered which has resulted in a major engine failure in 2001 with a repair cost in the region of £4000. Quote
Blatman Posted January 29, 2004 Posted January 29, 2004 I think Arnie got supplied reticular tin main bearings, instead of Lead Indium, and they failed, quite quickly........ Quote
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