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Hi Oldbloke, This is certainly an Engineering masterpiece! However, you seem to have the HS6 carb set up rather than the HIF6's I have on the late P6. Thanks for posting this one. Thomas

Just out of couriosity: I have been working on my throttle linkage over the past few days to eliminate the present play in order to be able to adjust the kick down cable properly. I put the proper rubber bush in the central bracket (there was none before) and managed to obtain close to zero...

Respect Demetris, looks like you were right! After re-installing the carb with the replaced cold starter unit O-ring, everything is back in order! All 8 cylinders are firing again. Apparently, the mixture was overrich and thus not igniting on the RH carb side. A little finetuning is still...

@ Demetris: Took the carb off again today and dismantled it completely including the cold start device: - again plenty of petrol inside the carb - there is 1 O-ring on the cold start device but it had a very loose fit, so I wonder if that was really sealing well. Fitted a new one. - adjusted...

I tested the carb and found: - a spray of petrol is visible when looking down the RH carb with the engine revving - looks the same as the spray on the other side's carb. - additionally sprayed starter spray into the air intake - no change! - the plugs of the non-firing cylinders look wet - still...

Checked the valley gasket and the servo/pipe: no leaks whatsoever. Still suspecting the carb: what causes the complete refusal to deliver pertrol?? Thomas

It's the RH carb as Harvey said. I removed the carb (HIF 6) and took it apart, but I could not find any obvious problem. The float chamber contains petrol and is absolutely clean. The needle valve could move freely. I used compressed air and blew through every bore, everything seems to be...

Hello, I have the problem that all over sudden the engine started to run rough such as if one or more cylinders were not firing. The following was tested: - changed all spark plugs - every cylinder gives a spark (when checked with an Accuspark tester) - changed the dizzy cap and the rotor -...

Well, the looks are okay but the question is whether or not the cable is long enough or not. The original one measures approx. 125 cm on the outer cable plus 10 cm on the inner. Thomas

Thanks for this information. It was quite helpful. The cable is out now but only to find out that my usual supplier (JRW) is out of stock at the moment. I need the single cable version for HIF6 carbs. Has anybody got an alternative source for one? Thanks Thomas

Hi Ron, I have to replace my Choke cable, and I was trying to review the previous thread you mentioned above. Unfortunately it can't be opened. Any Suggestion how and where this piece can be accessed? Thanks. Thomas

Thanks guys, that's what I thought. What puzzles me is the fact that I lost about 30° duration on both, inlet and exhaust, without noticeable wear on the lobes. The lobe lift of about 6,25mm also seems to be right on spec. But maybe, the camshaft was never made to what the workshop manual...

Hello, I dug myself a little deeper into this. Removed the inlet manifold and checked the condition of the camshaft lobes and the surface of the lifters. To me, they all look alright. Measured the cam lift directly of the lobes on serveral cams, and all read about 6.25 mm. Here is what the...

Just found the information that the standard rocker ratio is 1 : 1,6. This would give my valves a lift of almost exactly 10,0 mm which is to spec! Why then should I change the camshaft at all? Thomas

Have now taken lift readings directly off the pushrods: both inlet and exhaust have about 0.250" (6.35 mm). I have been reading that the standard cam lift is 0.390" (9.9 mm) but I 'm not sure if this means the lift of the cam lobe, or the true lift of the valve which would be bigger due to the...

John, that was my first guess: timing is out 15° on all valves, and in the same direction, meaning the chain would be a tooth out! That's why I double checked the timing marks on the chain set up. But apparently I had an error in my thought process. Timing is out 15° on both, inlet and exhaust...

Hello Lee, sounds good to me. I have been made aware of this thread when discussing my valve timing Problems. Who is supplying this type of cam? Got any specific Part numbers, also for Suitable Lifters? Thanks for your Feedback. Thomas

Thanks Dave. Thomas

Hi, I couldn't put my mind to rest without taking the timing cover off again and doublecheck the positions of the timing marks on the chain assembly. The pictures below show on the left side the new chain as installed, and on the right the old assembly prior to removal. In my view, both are as...

So I checked the timing with the spark plug method: It's spot on! Thomas

Interesting, I've done just that on another car yesterday! So I have the prepared spark plug around and will double check the timing marks and the true TDC. Will keep you updated. Thomas

Chris, I can follow your thought process, but have 2 queries: 1) I measured opening and closing angles on the top of the pushrod. In my view, those angles would be independent of the actual combined length of lifter and pushrod and show true angles. If I'd measured on the valve itself, then you...

Ron, interesting point you're making! You are right, all I changed was the timing chain set - and the Pertonix. But: - ignition seems to have been my initial problem (probably just a defective capacitor where I thought "Lack of Petrol") - now, the engine is reving up well, there is no sign of...

@Richard: thanks for the info. I tried to actually measure the opening and closing angles of both valves, but I am getting inconsistent readings. While turning the crank, I was taking readings when the push rods locked or freed up again, indicating the closing or opening of the valves. My...

Hi, obtained a new billet time chain set from RPI and installed it. Also fitted a Pertronix I electronic ignition. The engine started up after a few trys, but is not running well at all. I suspect a problem with the valve timing now, although I am pretty sure to have installed the sprockets and...