Wreck to Race.

[Peter Jones]

OK I realise now that leak down testers don't work quite the same way I thought they did.

I think the way I pressurised the cylinder and timed how long it took to de-pressurise might still be valid, but I'll make one of these too and confirm the results.

http://www.vmaxoutlaw.com/tech/leakdown_tester.htm

In any case I could hear the air coming out the carby so hopefully that's the root cause and I'll be back on the track soon.

Pete

[Preen59]

Good process of elimination. Top work.

Sexy looking clutch, Pete.

Why don't you go solid centre? Sooooooooooft! haha.

[Peter Jones]

Why don't you go solid centre? Sooooooooooft! haha.

100% urethane mounts! There has to be some give somewhere.

So can I assume you'll be using a 3 puck solid centre and billet mounts?

Pete

[Jarred]

amazing Pete! so much work in such little time! glad you have found it (hopefully atleast)

[GoLfMan]

go Pete

hopefully just some minor hitch! Top work (as usual)

[Preen59]

100% urethane mounts! There has to be some give somewhere.

So can I assume you'll be using a 3 puck solid centre and billet mounts?

Pete

Hahaha.. Yeah ofcourse. No i'm planning on using a 6 puck similar to yours.

[Peter Jones]

Tonight I called in a favour and after a long drive in the country, I've got my hands on a set of tools and shims.

If you're all nice to me I might write up the valve adjustment process



Pete

[jayjay]

are you planning on going solid lifter?

[Peter Jones]

Already have

Pete

[Peter Jones]

Just made a leakdown tester as per the above link.

All cylinders test at 10% with no cam fitted so it's looking good.

Now to refit the cam, adjust tappets and retest compression.

Pete

[Peter Jones]

150 PSI on all 4 cylinders now

We're back in business now!

Pete

[gerhard]

150 PSI on all 4 cylinders now

We're back in business now!

Pete

Great result Question is, how did one tappet suddenly close between the dyno run and home, at about the same time as the clutch shat itself?

I'd be interested in your thoughts.

[Geoffrey Hale]

Hey Pete 150 on all 4 I bet that's a relief. ..... Geoff

[Peter Jones]

Great result Question is, how did one tappet suddenly close between the dyno run and home, at about the same time as the clutch shat itself?

I'd be interested in your thoughts.

Most likely scenario is that I did something wrong.

The head was allegedly set up by professionals and I made some assumptions about their workmanship.

When I re-assembled the head I was very careful to put all the shims back in the same place on the assumption that it had all been set up before.

I looked for clearance but didn't measure it after I'd torqued the head on.

There's a lesson to be learnt here about taking shortcuts.

That sort of very low comp should have shown up on the dyno though so another theory might be that the seat wasn't properly seated and got hammered in on the dyno, but it's more probable that I just effed up.

Pete

[GoLfMan]

great result Pete! Very relieved for you!