Timing marks on RV8 Pully

Jono FD3 · Post by **Jono FD3** » Mon Aug 13, 2012 3:26 pm

Hia guys,
has anyone got a pic of the timing marks on a std rover pully, or even if they could tell me what the increments start at, what degree each mark is and how many marks in TDC is!!

I know this is a stupid question, but now the engine is in I can see the marks clearly, but having the SD1 pully machined for the P5/6 water pump, the text for TDC and numbers have been machined off!! School boy error I know! I've got the engine running and the timing is set to the marks the previous owner tipexed on the pully, but I don't think it's right as I feel it's down on power and it's laizy starting when hot!

Cheers
Jono

harvey · Post by **harvey** » Mon Aug 13, 2012 4:17 pm

TDC is in the middle, and the marks either side are up to 10 degrees in 2 degree increments, BTDC & ATDC.

richardpope50 · Post by **richardpope50** » Mon Aug 13, 2012 4:41 pm

FYI My pulley shows to 12 degrees in 2 degree marks - (painted it on Sunday).It also had the words Before and After.

Jono FD3 · Post by **Jono FD3** » Mon Aug 13, 2012 7:19 pm

cool, so it's the same as this then??

And I need to set it to 5 degrees before with the vac off at about 850rpm yea?

Cheers
Jono

mgbv8 · Post by **mgbv8** » Mon Aug 13, 2012 7:30 pm

Why dont you make a TDC tool and find ACTUAL TDC on your engine.

You can then mark real TDC on the pulley as a starting point.

Then use an adjustable strobe light to find your proper timing. If you dont have one I could lend you mine. I can bung it in the post for you if required.

This is the sort of thing

http://www.ebay.co.uk/itm/AccuSpark-P80 ... 2a1280e6c6

Perry

ChrisJC · Post by **ChrisJC** » Mon Aug 13, 2012 8:20 pm

Personally I've never bothered with the timing marks. Just get the engine running and retard the timing until it starts to pink, then advance a tiny bit.

Job done!

Chris.

stevieturbo · Post by **stevieturbo** » Mon Aug 13, 2012 9:04 pm

ChrisJC wrote:Personally I've never bothered with the timing marks. Just get the engine running and retard the timing until it starts to pink, then advance a tiny bit.

Job done!

Chris.

It will take some amount of retarding the timing to make an engine pink lol !

Advance til it pinks then retard a bit would be a better description.

But I agree with Perry. Unless you are 100% sure any timing marks are accurate, check TDC position yourself and verify.

Jono FD3 · Post by **Jono FD3** » Mon Aug 13, 2012 9:51 pm

did that on the build up when it was on the bench..... didn't seem too far out, possibly 1 degree? It's going to get rolling roaded in a few months after it's coverd a few more miles on track, so this is literaly just to get it somwhere near.

ChrisJC · Post by **ChrisJC** » Tue Aug 14, 2012 4:58 pm

stevieturbo wrote: It will take some amount of retarding the timing to make an engine pink lol !

I always get advance / retard wrong.

Chris.