THDP bolt size???

[SITHV6]

OK i know how we TR enthuzies love formulative questions, but what are the size of the bolts we need for the THDP bolts to the turbo? hmmmmmm? TIA

 

[salvageV6]

Metric 8mm standard pitch which I forget what that is.

Length is about 40mm I believe but that shouldn't be hard to figure out.

Studs are way easier however.

 

[2QUIK6]

It took me a while to locate the same bolts that came with my THDP, they are 316SS, any higher grade will be too soft, and less grade will still corrode and rust.
Found the exact bolt at McMaster-Carr, www.mcmaster.com its part# 92290A434 for the 30mm length allen head bolt, or 92290A438 for 35mm length which is just a bit longer than what came with it. Just punch in the part# at their wesite.
BTW, its a 1.25mm pitch thread on M8 .

 

[SITHV6]

Thanks!

OUTSTANDING! thank you for the replies!

 

[65malibuss]

Advantage of Studs?

What is the advantage of studs?
Easier to get the nuts off to remove the downpipe?
I've only had my car running for 3 days and I can't get the bolts out of the exhaust housing.
I used stainless steel M8-1.25 bolts, don't know what grade.

Is there a trick to getting the bolts out?
Will they come out easier when the turbo is still hot?

Thanks.

 

[2QUIK6]

Re: Advantage of Studs?

Originally posted by 65malibuss
Is there a trick to getting the bolts out?
Will they come out easier when the turbo is still hot?

Thanks.

Yep, run the motor a few minutes then remove them. Be sure to use plenty of anti-seize putting it together. Anything but SS316 may be diffiult to get out because it can corrode.

 

[salvageV6]

Studs are easier to align the flange over the turbo.

Easier to strip a bolt in the housing aligning it up every time it goes on and off, main reason I use them.

Nuts and lockwashers with a dab of neverseize.

 

[65malibuss]

Neversieze?

I've never seen that.
I've only heard of anti-sieze (the nasty shiny silver stuff).
Where do you get neversieze?

 

[salvageV6]

Here's one brand of it.

Nickel based good for 2400F.

http://www.nolansupply.com

Have to do a search for it when you get to the site, can't link directly to the page.

I think McMaster Carr has it also.

Copper based ones are also available rated to 2000F I believe.

I use it on everything. Seems to work out for my drivers.

 

[65malibuss]

Anti Seize Lube

Thanks.
I just ordered a bottle from Nolan Supply.