racer86
Posted a lot
'72 BMW 2002 / '72 Alpine A110 Gordini
Posts: 2,184
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As some of you may have seen in my readers rides thread I am uprighting the engine in my KP. However, the inlet manifold for the carbs was designed to mount them flat with the engine leaned over so now;    the are at an angle of about 27 degrees. Will this be OK? if not can i modify the floats or do I have to make an adaptor/ Change to bike carbs? |
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Snoozin
Posted a lot
Toyophile
Posts: 1,557
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The guys I know who have uprighted the K series motors over here, make up an adaptor plate that bolts to where the inlet/exh manifold normally bolts, then bolt the headers on seperately, and use a Datsun A-series sidedraft manifold in order to have the carbs maintain a level plane.
Not sure how the carbs are affected sorry, but thought that may be of some (a little...) help to you....
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madmart
Part of things
love is: valvebounce in top gear
Posts: 559
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i don't think there will be any probs running the carbs at that angle myself, though i could be wrong
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slater
Club Retro Rides Member
Posts: 6,390
Club RR Member Number: 78
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I think there is a maximum angle that you should run them at, i cant remember exactly what it is but for webbers is was something like 10deg. Id say you might have some problems with your setup.
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Rob
Posted a lot
You know, for kids!
Posts: 2,515
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a friend had a carb set up that wouldn't set up as it was at too much of an angle - this was a problem with the float sitting straight though so no idea how it might effect your set up.
there you go - absolutely no use at all !
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I reckon they'll run, but whether they run if you blat it for a long time or just set fire to it on tickover is another story, because of the angle of the dangle the float will be operating at a different angle / level and will have less fuel in than normal operation angle (i think, i cant figure which way the floats operate atm as its early, haha). You should be able to adjust them up so that the float chamber will be holding the same amount of fuel as it would if the carb was level.
Mark a half full pint glass where the water is, then tip it 27degrees, then see where the level is. Last thing you want is an overflowing float chamber as it all starts going downhill and leaking, too little fuel and you'll cut out on extended runs etc..
Adjust the floats and crank it. Just be careful of rich / lean mixtures because of bad float level.
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btw, thats a sweet motor, and i may have just re-itterated what everyone else just said, theres something to be said about reading through a thread before posting. I never bother so i give a good unbiased opinion, then usually get shot down afterwards as i say the conflicting opinion, i appear to have got away with it this time however.
oh yeh, lush car. gnarrrrr!
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racer86
Posted a lot
'72 BMW 2002 / '72 Alpine A110 Gordini
Posts: 2,184
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Apr 10, 2007 11:13:10 GMT
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Cheers For the advice guys. I found this pic of a Weber 45;  does anyone know if the float arrangement is the same in a Dellorto 40? I'm inclined to think that if the float is sideways it wont be as much of a problem, however its not going to be right is it? I might have to make up an adapter or change to bike carbs. Snoozing; Yeah i have seen the adapter, I originally thought they were to help get a straight shot into the ports but it turns out they also level the carbs.   Thanks again! ;D |
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Apr 10, 2007 11:25:03 GMT
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Yes floats are the same in Delortos. You can't run them further than 15 degrees basically because you'll get the wrong amount of fuel in the float chambers and the filling jet won't shut off at the right time. This will in turn affect the jetting.
an alternative might be to machine the back of the manifold.
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Snoozin
Posted a lot
Toyophile
Posts: 1,557
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Apr 10, 2007 12:17:57 GMT
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Haha I know that there red car...
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Mr K
Posted a lot
Posts: 2,993
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Apr 10, 2007 12:24:45 GMT
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yea, what about takeing a wedge off your manifold, then makeing some angled washers so the nuts sit flat again.
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