5 GT Turbo Fluffy

[TNT Andy]

This is my rocker arm, said to be a std cam, i remember there being a lot less adjuster showing on my 285

Cheers for that Mr S - it's looking like it might not be a lumpy one. It does sound smoother than my old CC variant.

 

[TNT Andy]

Have been thinking about this since looking at @Adey rocker pic the other day. Ill get a pic of the vans, i know the nuts are right at the top of the adjuster - only on a couple of turns and its hard to even hold the top of the adjuster - so i will say it looks like stock cam on the current one fitted in yours @TNT Andy

Do a pmt swap for your cat cam in situ before mapping

LOL - I've just got zero spare time atm Jon - We rent a property out which has just been wrecked, I've got a window to fit at mine, the cooper to get finished and sold. It's just not possible atm. Thinking longer term, I will get the GT2860rs repaired, get some work done to get bigger vlaves in a newer head and whack the CC in this block. But this is a few years down the line, I'm just about keeping my head above the £££ line without car stuff atm. But time is just as big an issue.

 

[Brigsy]

I know exactly what you mean mate! Keep it going on the current setup until time allows

 

[Brigsy]

This is the tappet adjuster on mine with piper 285 so i guess yours is stock.

 

[TNT Andy]

This is the tappet adjuster on mine with piper 285 so i guess yours is stock.View attachment 8655

Cheers John - that pretty much sums it up.

 

[DaveL485]

Jesus Brigsy, they're low! Last cam I saw that was cut that much was @Andyquadra and he put the locking nuts underneath the rocker arm LOL

 

[Brigsy]

Jesus Brigsy, they're low! Last cam I saw that was cut that much was @Andyquadra and he put the locking nuts underneath the rocker arm LOL

When i ordered it from piper they ground it from a blank apparantly

 

[TNT Andy]

We're still here.

Goto Go!

 

[TNT Andy]

Having troubles guys.

I'm having a problem with a boost leek.

The boost will build and hold @ 20 - 21 psi, but it takes an age when in 4th or 5th, and it's lost all it's potency.

I've checked all boost pipes, joints, actuator / controller pipework which all seems acceptable. I thought there may be an issue with the throttle body above the cholk flap, but there is nothing that can leak there, so I pressurised the system from the carb side of things and blanked the turbo inlet. Can't build 1psi of pressure?????

Any idea's why my turbo may be leaking?

is it ok to test it that way?

 

[DaveL485]

is it ok to test it that way?

Without pressure to the far side of the dump valve (from the manifold usually) it would open your dump valve, possibly?
Could be leaking out of the actuator line from a bleed valve


Can you smoke test?

Have you checked the wastegate isn't stuck open a little bit? That would tie up with your symptom.

 

[TNT Andy]

Without pressure to the far side of the dump valve (from the manifold usually) it would open your dump valve, possibly?
Could be leaking out of the actuator line from a bleed valve


Can you smoke test?

Have you checked the wastegate isn't stuck open a little bit? That would tie up with your symptom.

OK, I'm not gay, sailor boy, so let's just get that right, and qualify it by not having a dump valve. So that clears that up.

Wastegate? Surely the cold and hot side are completely isolated from each other? I've checked all vac lines and all hold boost.

I'm thinking it could be turbo related, but what? If I where to fit a blank to the inlet of the turbo, and applied pressure from the outlet (all compressor side) should that be totally sealed?
What and how do you smoke test?

Thanks for trying as always Dave. :ay:

 

[DaveL485]

OK, I'm not gay, sailor boy,

If I saw a row of pink tents at a freddy mercury tribute weekend, they wouldnt be as camp as you

Wastegate? Surely the cold and hot side are completely isolated from each other? I've checked all vac lines and all hold boost.

Have you confirmed a leak then? I'm just thinking of your symptoms, coming onto boost lazily with no leak would be a classic wastegate open symptom.
Do you still get compressor surge/wastegate chatter when you lift off? When you have a boost leak of significance that usually changes, or tails off, as boost escapes through the hole. Usually you hear a leak too, when you're on boost.

What and how do you smoke test?

With a smoke tester!

It basically fills the system with smoke, and where there's a leak you see smoke escaping.

 

[andybond]

Penny warped on the wastegate ? Looks like it shutting but isnt ? Possible crack around wastegate ?

 

[TNT Andy]

If I saw a row of pink tents at a freddy mercury tribute weekend, they wouldnt be as camp as you

I have no retort for such a comment sweet cheeks XXX

Have you confirmed a leak then? I'm just thinking of your symptoms, coming onto boost lazily with no leak would be a classic wastegate open symptom.
Do you still get compressor surge/wastegate chatter when you lift off? When you have a boost leak of significance that usually changes, or tails off, as boost escapes through the hole. Usually you hear a leak too, when you're on boost.

Hmmmm - all great points, I hadn't considered some of those points having been preoccupied with banana monthly, a lubed up special. That aside - Compressor surge is no longer as epic as it once was - I'll have to check to see what's happening in that department next

With a smoke tester!

It basically fills the system with smoke, and where there's a leak you see smoke escaping.

I have no access to such equipment - I'm sure I could mock something up though if pushed - we have canned smoke at work.

Penny warped on the wastegate ? Looks like it shutting but isnt ? Possible crack around wastegate ?

Another area to look at.

Thanks for all your input - I'll take a look at every given opportunity and report back

All our love Big Gay Andy N Fluff XXX

 

[TNT Andy]

^^^ - first time using multi - quote - rather like that

 

[TNT Andy]

Found it!

 

[Adey]

go on where was the issue?

 

[TNT Andy]

go on where was the issue?

Front of the compressor housing 'was' a small lug which 'blanked' a hole where you can hook up vac line.

That's blown out!

Thank fook for that.

Anyone know what thead it's likely to be?

 

[andybond]

Anyone know what thead it's likely to be?

Drop a bit of weld into it thread

 

[TNT Andy]

Drop a bit of weld into it thread

Aluminium?

You must have seen my welding!!!

Not a great idea!