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94486

General Discussion Area / Re: r90400225 - Part no?

« on: 20 August 2007, 07:43:14 »

Replied to your PM - the sump part numbers do seem to suggest it is from 1.8 only.

94487

General Discussion Area / Re: Whats Happen to Courtenays Website?

« on: 19 August 2007, 20:09:52 »

Wouldn't mind if they did go tits up.  I've always found them to be expensive and not the best.

94488

General Discussion Area / Re: There at last...Yippee

« on: 19 August 2007, 22:58:54 »

You made it now, well done

94489

General Discussion Area / Re: There at last...Yippee

« on: 19 August 2007, 22:48:44 »

I have at last reached the 1k posts..

Its been a long journey considering i dont give much input to this site but glad to be part of it..

1 more post need for status change

94490

General Discussion Area / Re: More from my holiday

« on: 19 August 2007, 21:38:19 »

Looks like fun was had by all.

To save horizontal scrolling, can you resize photos for here to 640 width?

94491

General Discussion Area / Re: Helpful People

« on: 19 August 2007, 22:23:45 »

Yeah,

To be honest i thought that as soon as it was posted.

Only a thought anyway


Matt

All suggestions welcome

94492

General Discussion Area / Re: Helpful People

« on: 19 August 2007, 21:50:09 »

What about a list of problems , then opposite the best people who knows about it or has that particular equipment?

For example

Camcover gasket replacement                                                                  Loo Knee
Multimram fix                                                                                           MarksDTMCalibra


I think it would be a good idea for the more complicated things like above



Matt

Not sure why that would help?  Once posted, you may get lots of decent advice, not necessarily from the assigned expert.  Also, certain experts will become overwhelmed.

94493

General Discussion Area / Re: Users Online

« on: 19 August 2007, 21:41:04 »

How does it work is not in alphbetical order? :-?

Most recently seen.  Hence why you always appear near top

94494

General Discussion Area / Re: TLGPs ect

« on: 19 August 2007, 09:26:21 »

TLGP? Traffic Light GPs?

94495

General Discussion Area / Re: Stripped sump thread :(

« on: 19 August 2007, 13:43:28 »

Not wanting to be to technical but....

The shear strength of the female thread in the aluminium will limit the axial load on the bolt (hence it strips IF its over tightened.....). If you then fit an insert, the area under shear increases as radius squared, and you can allow the bolt to take more of its design strength axial loading. This is because the yield stress in shear of the helicoil material is much higher than that of the aluminium.


Basicly, the aluminium thread is now longer and hence gives more support, the stainles steel helicoil is way stronger than the aluminium and the result is....a much stronger thread.

Plus they are much easier to work with as the helicoil is a precision formed thread and not a rough cut thread in an casting!

 

Makes a lot of sense once explained.

Thanks for the explaination - as said, certainly wasn't disagreeing with anyone, just trying to understand

When undoing, does the helicoil ever come out?

94496

General Discussion Area / Re: Stripped sump thread :(

« on: 19 August 2007, 09:24:27 »

The helicoil is quite a hard steel, AFAIK the sump is aluminium

But it can never be stronger than weakest point - in this case the helicoil against the sump?

94497

General Discussion Area / Re: Stripped sump thread :(

« on: 19 August 2007, 08:59:14 »

You cant re-tap reliably.....by stripping the threads, the extra metal required to get a good tap has been removed, you can only go over size.

And over size isn't as good and as strong as a helicoil.

Yes, I was referring to drilling and retapping to a larger size.

As said, don't really understand why helicoil would be stronger that a (oversize) retap.  Not in anyway disagreeing with you, just lack of understanding on my part.

94498

General Discussion Area / Re: Stripped sump thread :(

« on: 19 August 2007, 08:37:21 »

Why avoid helicoil.....if done correctly, its better than a tapped thread and is much smoother.

Most top race engines have helicoiled everything!

I don't have much understanding of such things, but if you have room to retap, isn't that a better fix?

94499

General Discussion Area / Re: Stripped sump thread :(

« on: 18 August 2007, 23:27:17 »

On old tractor engine, I retapped and put bigger sump bolt in.

94500

General Discussion Area / Re: Tunnie's little temper trantrum

« on: 19 August 2007, 13:47:52 »

It must have been in the morning.....surely your eyes can detect an impending collision with a door....

pmsl - you sod, just spilt tea everywhere....