Help me before i torch it!!!

Speaking to Mark Adams today he didn't recall seeing this problem before. he says he should be able to sort it at a cost on a rolling road...now his time being £60hr and rolling road at £75hr he's saying about 3 hours work...£405 car also needs a new autobox soon...£1200 from ashcroft...£1600!! Now i've got my eye on a rebuilt 3.9 with a great spec running eeddleebrok 600carb an inlet, set up and ready to go for £900 and used r380 box being about £250 plus some parts like clutch and fitting bits i'm thinking £1500 all in for new engine and manual conversion. Sell my injection ecu loom and parts and the engine for say £300 thats making it about £300-£400cheaper than sorting out what i already have!!!! But having a better engine with more power and a manual!

I don't know what to doooooo!!!!!! AAAHHhhgggggg!!!!

Tell me to mind my own business if you like BUT would it be worthwhile changing the cam for a standard one?.£60-70 on ebay just possible it
may be the problem I think you have tried every thing else.I will get
my coat.

Keep the coat on the hook!! I've been thinking about that. Mark said he'd be pretty sure it wouldn't be the cam itself at fault, he's only ever seen one cam that was bad. Did find tonight that I'm not getting any voltage when in gear to the ecu. Now I'm sure this will cure the stalling in gear but could also help the not revving?!

Perhaps it doesn't know it's in gear? Some kind of rev limiter?

Yeah I'm thinking that... If its that simple you may hear a distant scream follows by a v8 howling it's tits off!!

I wonder if the 3000rpm is some kind of "limp home" safety mode

Oh I just thought about something else...try it with the fuel cap removed

Blocked tank breather you reckon?

dirtydiscov8 said:

Blocked tank breather you reckon?

Click to expand...

Yup..it's getting some fuel but not enough...erm i think, This advice is worth what you are paying for it

Can't see it myself, I would have thought 14cux at WOT would be injecting at full duty way before 3k rpm, and the way it just shuts off and goes quiet isn't like fuel starvation.

Still need to carry out those test lamp experiments and see what is shutting down...

Right i've sorted it!!!!!

Take a guess at what it was..go on guess, you'll never get it!!!

Go on the suspense is killing me

....The intake pipe between the air flow meter and the inlet plenum was completely collapsing shut at 3000 rpm when the heat of the engine bay had made the hose that little bit softer. The hose wasn't old or cracked it was a oem part of about 6 months old. Guessing the extra air the cam was drawing in was just enough to do it!!!

Took the hose down to sfs and they are going to make me a nice 4 ply silicone one with wire reinforcing for about £35!!

Could this be why people complain of poor running after a cam change?!

WELL!

Nice ****ing result dude!

I have replaced my old 1992 version with a newer type, it's the rubber type, with sort of flared ends that fit over the alloy tubes. I fitted it as a precaution because my old 1992 version was like cloth with wire coil, and it was starting to delaminate and could collapse.

Are we saying my new rubber type could be a problem in future??

And HOW did you manage to figure it out mate? Intrigued!!

Take a look at your air filter btw mate, maybe it's a little bit restricted also?

Hooooooooooo Rayyyyyy .How the hell did you find the problem its not
that easy to see that pipe. When you get a chance let me know what you
think of that cam PLEASE.

Mr Noisy said:

WELL!

Nice ****ing result dude!

I have replaced my old 1992 version with a newer type, it's the rubber type, with sort of flared ends that fit over the alloy tubes. I fitted it as a precaution because my old 1992 version was like cloth with wire coil, and it was starting to delaminate and could collapse.

Are we saying my new rubber type could be a problem in future??

And HOW did you manage to figure it out mate? Intrigued!!

Click to expand...

The rubber hose was fine just guessing that the combination of getting hot and soft and what I can only presume is an increased intake vacuum made it collapse!! It was worse with the roads lifters and they do quote on giving more intake vacum!!

I was pulling on the throttle cable in the engine bay and the hose just folded up infront of me and I said " no fuuuuuu*******kkkkking way "

Took the intake hose off so it was running without maf and it whacked right round to 5k no probs. went for a spin again running no maf and it was fine!!

boycie said:

Hooooooooooo Rayyyyyy .How the hell did you find the problem its not
that easy to see that pipe. When you get a chance let me know what you
think of that cam PLEASE.

Click to expand...

Cam seems good but I haven't had a proper drive yet only taken it out with the maf off so it was a little flat in places. Sfs should have my super super new intake hose made and to me for Tuesday so I'll report back then.

I'll post up a video of the standard hose clsoing up too.

Happy days anyway mate.

I changed mine because I had heard the old ones have a habit of closing up.

So yours hasn't got standard tappets in?

Those old intake hoses do look rather pants.

Rhoads lifters from real steel and adjustable pushrods, with the crower 50229 cam!! Pretty much a new top end. The lifters clatter like solid lifters but they are meant to. They "pump up" at about 3k to give maximum lift but below that the bleed down to give better torque and something called mpg! But I only get gpm out of mine!! Work out cheaper than oem lifters too. Engines only done 64k miles.