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headers already sent by (output started at [ROOT]/includes/functions.php:3887) [phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4754: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3887) [phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4755: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3887) [phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4756: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3887) RS Motorsport :: Classic Speed Restored • View topic - MK1 RS2000 project
My issue was definately the Head Gasket - #2 into water jacket. It's now fitted with the cometic HG off the other engine (I'm really testing the re-usability of the cometic MLS). I was running Avgas at Barbegello last weekend, it seems to have left that brown residue internally, but at least everything is nice and clean.
That head has been heavily skimmed - so it's up near 13:1. It runs OK on 98 with booster and slightly retarded timing, with Avgas I can then advance the ignition timing further.
I suspect the "pinging" contributed to the HG issue.
Paul which head casting have you got and how much ignition timing are you running in total also how big are the lumps on the pistons as that brown will probably be oil as the only other time you usually see anything brown after avgas is rust in the exhaust
Danny: This is the spare "old" engine. It's just a standard Aussie 2ltr ported with the group 1 valves fitted - the pistons are flattops. The engine had a lite hone then new rings and bearings fitted end of last year; it then sat under the bench for the last 10 months while I played with the new engine.
Hopefully it'll last the next event and i'll have the new engine back together for next year.
Paul if that engine only has flat tops in it it wont have 13 to 1 as it'll be more like low 11's which should be fine on 98 but I would be using a decent head gasket like a Felpro or a cometic and keep an eye on the ignition timing
Danny: I have 37cc chambers, was running a 40tho gasket, with 20tho piston protrusion which works out to approx 13.37:1 compression. I have now fitted a 60tho gasket which brings it down to a more reasonable 12.45:1
Max timing was set to 28 degrees to try to stop pinging even with 98ron and booster.
Another great night at the McRae Twilight Rally Sprint.
Fahley ended up beating me with his new NA YB cossie engine but we had a good time trying to catch him. My car had a worrying tappet noise at 2000rpm but ran faultlessly all night otherwise.
I'm still turning in to early but that leaves room for improvement for next time.
Typically my spotlight brackets arrived the day after the event! Does anyone know where I can get some of the adjustable steady bars? I've seen some nice ones with ball joints on each end and what I assume is a LH and RH threads on each end for in-situ adjustment.