Timing on Rover V8

[walker]

I have just finished fitting the 4.6l short motor to the Rangie. I have kept the WW stromberg carby. I have set the timing at 6degrees BTDC but it still seems to run out of puff at higher revs.

Before I go mucking about with the timing any more I just wanted to see if anyone else is running a 4.6 with Carby and what you have set the timing at.
I am thinking that it may not be a timing problem but that the carby cannot give enough fuel flow at higher revs. I have the same jets as out of a 4.4l.

Any recomendations? At some stage i would like to get it tuned by a professional but being just after Christmas I have no money at the moment.

[F'n_Rover]

to see if the problem is the spark timing you could always advance the dizzi a heap. (until it starts detonating). back it off until the rattle stops (+a bit). If it has made a noticable difference at high revs, you know this could be the problem.

this is the method i use to set the timing on my holden six. Although to be safe, put it back to the factory timing marks after you do the above check.

[walker]

Ok, the problem seems to be timing. I advanced the timing to about 18 degrees BTDC and it ran a heap better and just sounded better.

Could the distributor be worn or something causing it to look like it is far advanced when it is not really. I would not expect it to run at 18 degrees BTDC or at least it would ping a lot...it did not ping at all.

And I have checked my TDC mark and it is correct.

[F'n_Rover]

May be the harmonic balancer has slipped? when you say the tdc mark was correct, did you actually check it against the piston?

[walker]

Yes I did.