Panic Ahead !

Panic Ahead !

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Mr Cerbera

Original Poster:

5,031 posts

229 months

Monday 20th February 2017
quotequote all
Thanks for the graphics thumbup

Hmmmmmmm, now where to find some Kiddies' bubble stuff in Lux scratchchin
(without getting arrested for my bad translation)

ukkid35

6,138 posts

172 months

Tuesday 21st February 2017
quotequote all
Tanguero said:
There isn't a "flat spot" where the bubble size is static because of the volume difference between the cylinder and the bubble.
You've convinced me - Thank You, I will try that shortly

Reminds me of the doubters who are not convinced that the acoustic method of setting cam belt tension (on my other car) is sheer genius.

ukkid35

6,138 posts

172 months

Sunday 2nd April 2017
quotequote all
ukkid35 said:
Tanguero said:
There isn't a "flat spot" where the bubble size is static because of the volume difference between the cylinder and the bubble.
You've convinced me - Thank You, I will try that shortly

Reminds me of the doubters who are not convinced that the acoustic method of setting cam belt tension (on my other car) is sheer genius.
You're right, there is no point at which the bubble/film is still, it is either moving one way or the other. Brilliant - thanks.

I have added a pointer/edge so that I can use a mark on the a/c pulley



Tanguero

4,535 posts

200 months

Monday 3rd April 2017
quotequote all
ukkid35 said:
ukkid35 said:
Tanguero said:
There isn't a "flat spot" where the bubble size is static because of the volume difference between the cylinder and the bubble.
You've convinced me - Thank You, I will try that shortly

Reminds me of the doubters who are not convinced that the acoustic method of setting cam belt tension (on my other car) is sheer genius.
You're right, there is no point at which the bubble/film is still, it is either moving one way or the other. Brilliant - thanks.

I have added a pointer/edge so that I can use a mark on the a/c pulley

Told you! biggrin Glad it helped. thumbup

Edited by Tanguero on Monday 3rd April 16:22

ukkid35

6,138 posts

172 months

Monday 3rd April 2017
quotequote all
Tanguero said:
Told you! biggrin Glad it helped. thumbup

Edited by Tanguero on Monday 3rd April 16:22
Yes but...

Now it's really clear that the cam timing is totally FUBARed, which explains why it maxes out just under 170mph.

There's not enough adjustment within the sprocket slot allowance, so now I have to find a way to shift the cam chain one tooth at a time, with the timing cover in place and the engine in situ.

This is really going to be horribly difficult, or physically impossible.

I am not looking forward to find out which.

Edited by ukkid35 on Monday 3rd April 21:37

Tanguero

4,535 posts

200 months

Monday 3rd April 2017
quotequote all
ukkid35 said:
Yes but...

Now it's really clear that the cam timing is totally FUBARed, which explains why it maxes out just under 170mph.

There's not enough adjustment within the sprocket slot allowance, so now I have to find a way to shift the cam chain one tooth at a time, with the timing cover in place and the engine in situ.

This is really going to be horribly difficult, or physically impossible.

I am not looking forward to find out which.

Edited by ukkid35 on Monday 3rd April 21:37
Shouldn't be too hard to machine the slots on the sprockets surely?

TwinKam

2,937 posts

94 months

Tuesday 4th April 2017
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No need for anything so dramatic! First, get the cam where you want it and then 'walk' the sprocket around to a different position keeping the chain and the rest of the engine exactly where it is. you'll find that when you've moved it about 90 degrees, the slots will line up, aim to start with them roughly in the centre of the slots so that you have scope to go both ways.