Does anyone have an online source for 330 desoto hemi fits and clearances? Ring gap, firing order, oil pump clearances, etc. All the google monster finds is **** for sale.
I'll have to dig out a 1956 National Service Data book I have to see if Desoto is in it. That may take some digging as I am not positive where I have it stashed.
https://www.ebay.com/itm/Motor-s-Au...105?hash=item2ad49d29e9:g:U5UAAOSweHddfYyUBuy a Motors manual for the year of the engine or up to 5 or 6 years newer. Ebay is your friend here. And it will have lots of other good stuff in it.
Man the Motors manuals are where it’s at,,,,there is an abundance of information in there. What year and what all do you need,,,when I get time I will try and look it up. Tommy
I bet you didn’t think I really had the book,,,lol,,,just kidding. This manual covers the years 1946-1956. Okay,,here goes 56 Fireflite 330 Compression ratio,,,8.5 HP,,,255 @4400 rpm Oil pressure,,,,50-65 Ring gap,,,,.010,,,compression and oil rings Rod bearing clearance,,,.0005-.0015 Bolt torque,,,,45-50 Main bearing clearance,,,,.0005-.0015 Bolt torque,,,,80-85 Crank end play,,,,,.002-.007 There is a ton of information in there,,,more than most people would ever need nowadays. I looked up the oil pump clearance,,,,I will get it another time,,,a fair amount of writing there. I need my other gl***es to copy all of it down. But,,,those pumps are a very goood quality pump,,,usually always check in spec. If you need it ,,just let me know. Tommy
Okay,,here is what the manual says. Since you have worked on aircraft,,,I will just hit the high spots. It states,,,the cover should be smooth and flat within -.0015 . This is very easy,,,it will have some scratches I’m sure,,,they can be removed easily with a surface plate and some paper with a circular motion,,,you know the drill . Rotors to top of pump body,,,,clearance is .004 max,,,again,,,if it is close,,,it is easily corrected. Outer rotor to pump body,,,,,clearance is -.012 max,,,,I am certain it will be in tolerance unless it is badly worn. Insert outer rotor and inner rotor into pump body,,,,feeler check between rotors is -.010 max. Again,,,it should be in tolerance,,also,,,check for any galling or score marks,(,,I just added that.) Remove and clean / inspect relief valve . Should not be any severe galling or scoring After cleaning it should move freely in the bore . After complete cleaning and re***emble,,,,tighten top cover bolts to 10-12 ft. Lbs. Bolt to block is 30-35 ft.lbs. If you should need a new pickup,,,Hot Heads has them for 27 dollars . Tommy
Oh yeah,,,here is my pump for my 291. It checked,,,,main rotor to body,,,,.007 Rotor to rotor,,,,.004 Rotors to cover,,,,.002 Like I said,,,unless they are awful worn,,,they will check pretty darn good. These pics are after I relubed it to prevent rusting. I completely cleaned it in Chem dip,,,,and it was perfectly clean,,,,but fresh clean iron will rust like a S.O.B. In just a little while unless you oil it.. I completely oiled the body by hand,,,just to be safe. Tommy
Yeah,,,I think I gave 20 bucks for mine on EBay,,,,something like that. The manual is in great condition ,,,,,and I am glad to have it. Tommy
Thanks @Destoto291Hemi That should get me on the way. I will have to find a manual. Gives me an excuse to hit old books stores and garage sales.
I'd get the factory shop manual, rather than the Motors manual....or perhaps in addition to the Motors manual. https://www.ebay.com/itm/130741222668?
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