Thread: Help...2L engine backfire with flame and power loss

I would check my workshop manuals for the correct setting, as there would be difference in oil pressures between the 2 litre siamese bore, with it's bypass oil filter and the 2 litre spread bore with a full flow oil filter.
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Yea but getting different figures from different manuals...my hard copy should be here tomorrow . It's being tested( club rego) then back to the shed till I sort it out,,

Well im legal now..club plates in hand .
Ill wait for the banjo bolt metering plug before buggerizing around in it.. if the info in my pdf manual is acurate the pressures fine, but im not silly{hmmm????} enough to beleave only one l r workshop manual, ill wait till ive got the hard copy to arrive.

Originally Posted by mfc

Well im legal now..club plates in hand .

Congratulations!

thanks to all you guys help and past posts sir authur ,still got paint and asorted things thatll be breaking ,but thats the game

Originally Posted by wrinklearthur

Regards the high oil pressure, I would be watching out for hydraulic lock.
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Interesting - something I have not really thought about. My paper manual gives the pressure at 55-65 psi at 30 mph, but it looks like it is describing the '48 to '54 engines with the bypass filter.
Mine has the full flow so I assume it is the spread bore. can't find any reference to that in this manual, only 50 to 60 psi for the diesel.

The little bus has now done 290k miles with no mishaps (and I have had it up to 5000 rpm a couple of times (it is balanced), so I think I will leave the relief valve as it is.

Thanks Arthur.

Cheers,
Terry

yea im thinking the siamese engines like the illustration you describe have a lower oil presure than the canister 1955 on jobs .that photo confused me to ..im guessing the figures from 123 rover50' s 1954 manual {30 35 psi ??} is for the kind with the canister on the pasenger side.while the 55 65 psi is for the latter engines with the paper filter, isnt there a difference in bearing size {big end} between the two as well?

Originally Posted by mfc

hmmmm 2L 1955 engine opperation AO/6 check that at least 20 psi at idle. adjust to 55psi to 65 psi at 30 mph thats from the black fronted workshop manual...1960 second edition{ pdf}
where the old engine needed thicker oil this one likley needs thinner..
ps it settles on 40psi at idle when warm and just under 60 psi at 30mph in 4th gear on flat road{ajusted with releif valve}

So different engine{1600 or siamese?} or typo in my manual????? {ps its a 1957 engine}
regards mark

My manual is the October 1963 reprint of the March 1960 edition (pale green cover), and the Operation AO/6 wording is exactly the same as your pdf. Engine specs show the only difference is bore size, no different listings for bearing size for 1.6 and 2.0 engines.

Were some earlier 2.0 engines siamese bore?

Terry