High Tensile, mains bolts
Turbo Mini Forums

Where can I get some 2 1/4", 2 3/4" and 3" high tensile bolts like ARP or Unbrako. I have tried all the usual suspects and some others to no avail. Well i havent phoned about the ARPs yet but id expect them to be expensive.

Any help would be apretiated.

Sprox

i've got a link on my work computer of a place that seems to do most unbrako stuff.

if not give TMS a call.
TMS Ltd
Track Marshall Building
Corringham Road
Gainsborough
DN21 1QH(Road Map)
Lincolnshire
Tel: 01427 612301


they get my anything i want. i do know the owner though and its 5mins walk from my house

will you be using these new bolts for the main caps?.

carl

WWW.FORCE-RACING.CO.UK PLEASE CLICK HERE

Edited by Sprocket on 13th May, 2007.

Edited. No need for the swearing. TF.

Edited by Tom Fenton on 13th May, 2007.

these guys have been good in past

http://www.toolfastdirect.co.uk/acatalog/u...elf_Colour.html

He asked for a link because Iain told him he had a link for a place that could help him, the other tip Iain had was the one he supplied in his post...

BTW, the original bolts are not 8.8. They are 10.9 in the Minispares kit at least.

Schrödinger's cat - so which one am I ???

well i was supplied with 3 stripe ones with my engine kit, and these stretched when i tried to torque them up, i replaced these with the high tensile 6 stripe bolts. not sure what the iso.sae grade of them are offhand

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

3 stripe = sae grade 5
6 stripe = sae grade 8

http://www.unified-eng.com/scitech/bolt/boltmarks.html

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

Yes, three stripe (grade 5) is what I've been supplied with.

Essentially the lowest grade that can be called "High Tensile".

SAE 5 = (approx) ISO 8.8 (a basic high tensile bolt)
SAE 8 = (approx) ISO 10.9

What torque did yours start to stretch at ???

Schrödinger's cat - so which one am I ???

(post repeated itself ????)

Edited by Rod S on 19th Jan, 2008.

Schrödinger's cat - so which one am I ???

i did them to 50, then to 70, but i couldnt achieve 70 lb/ft

here is the bolts:







id bin them and get pukker ones

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

in that last pic, you can see where one of them has 'thinned' where it has stretched, maybe someone should send MS this link?

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

This was my concern and the original reason for this topic.

Robert, nothing contentios anymore, You just have to laugh. I never did find anywhere to get the cap head bolts, though Smith and Bulough in Bolton may be wrth a phone call. As is the place Iain mentioned.

I have opted to use the standard Factory bolts all round. 998 ones for the extra 'four bolt' ones and the 1275 ones for the main caps. Though the Swiftune studs look a good option.

Does anyone actualy do longer studs for use with a strap? no one advertises they do. Id expect you would need to order them specialy??

Just had exactly this problem with my centre main strap from minispares. Had them in and out a few times to plastigauge and they stretched.

I also noticed they were not long enough at 3.5" as the standard ones are 2.75" + the 1" strap should make them 3.75" to have the equivalent length as OE.

I managed to track down some cap head 3.75" bolts as part of Rob Walker's centre main strap kit.

Nick.

what are they again, 7/16? 1/2 unf?

http://www.ballsfasteners.co.uk/shop/searc...ize=1/2"%20UNF

these guys seem to have almost everything

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

what are they again, 7/16? 1/2 unf?

http://www.ballsfasteners.co.uk/shop/searc...ize=1/2"%20UNF

these guys seem to have almost everything

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

and its a link too!
(sniger :))

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

I ordered some ARP bolts for my main caps from APT in the states. Since I am putting a strap on the center main he sold me 2/3s his ARP stud kit and 2 additional ARP bolts for the center main. They should be arriving any day now….

OK,
So it looks like the two bolts I have been supplied aren't really up to it (I can't really check the length accurately until the cap is machined but the grade certainly seems wrong) so I'll try and get some decent ones (imperial size with an ISO rating ...Hmmmm...)
Nice link (Joeybaby83), not come across that company before.
I Might try the States (Mikes1098) if the value of two bolts is low enough, but I've just been screwed by UK customs for importing a small (but expensive) package of engine management bits !!!

Rod.

Schrödinger's cat - so which one am I ???

I *may* have found a 'cheap' source of ARP bolts - http://www.nolimitmotorsport.com - certainly on hte face of things they are waaay cheaper than any of the major Mini parts suppliers I have found so far.

Anyone else had any dealings with these people before I place an order ?

Metric is for people who can't do fractions.

finnings CAT bolts, 6 dash,
come in the correct length for a strap,

garanteed sae grade 8 and above quality,
as used in all my engines .
do not use the 3 dash bolts, !!!!!!!!!!
carl

WWW.FORCE-RACING.CO.UK PLEASE CLICK HERE