For the love of a tractor engine: The life and times of the 18R-G

[o_man_ra23]

Using the Mk1 eyeball technique, you can get the cams pretty close by lining the cam notches up with the cam cap arrows, with the top of the chain and the exhaust side taut and the crank at TDC. Small adjustments from there should be made with a dyno run.

As for the valves, if you rotate the crank 1 revolution so the cams are pointing in the opposite direction, you should be able to measure the other 4 valves. It is important that all valves are measured and are within spec.

[Roscos]

Sw sell new tensioners. A retarded exhaust will make the intake go straight out and lower the compression reading. Rings not bedded won't help the compression either. Have you checked the valve clearances with a feeler gauge?

So SW sell top tensioners as well the bottom one???
How about guides???

Roscos

[cheviotrola]

I'll ask them tomorrow morning if you want roscos. Cool o man, will get on it tomorrow

[o_man_ra23]

Guides... no. I believe they are working on getting a supplier to re-coat them possibly. Top tensioner doesn't look like the original, but does work.

[2004lowlux]

i never knew these were so sensitive. i didnt have much info when i put mine back together so i assume its all timed up correctly it was going pretty good second last time i ran it but last time it ran like a welshman and started backfiring under load under 3k then cleared up once it revved up over that just like it was after i got the exhaust done.
got no time for it anyway working 3 jobs and with 2 kids my plate is full atm.

btw whats the factory efi manifolds worth these days?

[Zammo]

well if someone didnt know what it was you might get it for $20

but since the last ones in existence are lock away in secret bunkers good luck finding one

[The Witzl]

yeah those EFI manifolds are getting harder and harder to find.
Its soon going to get to the point where custom manifolds will be cheaper and easier.

[cheviotrola]

I sold mine for 600 about 3 months ago

[The Witzl]

jeesus - that is almost custom manifold territory.

i guess i might have to sell mine eventually too.

[cheviotrola]

Thats an allen head bolt welded into the tensioner housing. If anyone knows of Andre in Perth building a black RA23/ RA28, feel free to pass on his details.

[Zammo]

OMFG that is some sexy "Agrineering" woohoo

Adjust makeshift tensioner using spacer
weld in place
?
Profit

[The Witzl]

thats a pretty tough looking unit at the top - whats that from?

[Zammo]

SW motorsports/modified 4ME from the looks

[cheviotrola]

From a 4M, as suggested by Stewart Wilkins himself

[Zammo]

it looks a little long ???? paybe just compared to the dodgy one

i think you might need to shorten the rod if its a stock 4ME one