Can I replace a 160 HP crankcase by a 150 HP ?

[pilote999]

I have a Lycoming 0-320 D2J (160 HP) to be overhauled. My mechanical shop suggest me to replace my actual crankcase (that is good) by an other good used 0-320 EA1 case? (150 HP) in order to save $1000 (they need a D2J case for a certified engine). Shoud I do it?

What is the difference between 160 HP D2J crankcase and the 150 HP case?

Thanks!

[Sid Lambert]

How does it save you a $1000? A factory 160 hp has different bearings than a factory 150hp. An stc'd 160 uses the 150hp case and bearings. You can convert a 150hp E case to a 160hp case for about $1000 but you don't have to.

[rhill]

May solve there problem,it will create problems for you,there is a fixed end play between crank and case you have two parts,a yellow tag crank?and a yellow tag case,that have played well together for some time,now they want you to brake them up for the sake of a few dollars.Ad in to the mix some 0-320s have small nose bearings some don't. The standard today is factory new limits on crank,case. Rods if they don't tag should be replaced with new.Shops I talk to are tossed 50/50 on new or reground cams /new or reground lifter body's,Cylinders are a thread all to there own.If you got a engine that has gone to TBO and beyond,don't brake it up now.
RHill

[flyingriki]

What costs $1000 to convert to 160hp? I've been told there is nothing done other than typical updates to old cases. Split nose bearing and good to go....??

Sounds like they need that case and are offering him $1000 for it? Isn't a factory zero time overhaul simply made up of unrelated used parts anyway?

[jrs14855]

The original poster is in Canada where the rules are probably more stringent. They probably require a specific part number for the 0 320D, where with an experimental you can mix and match.
I would take the 1k IF the shop will measure the fit of your crank in the new case. The only issue with E series engines is that some of them will not support constant speed props. These are the ones with 0 235 front mains. An experimental 160 hp can be built using the 0 235 front mains.
The advice about the case and crank living together is total nonsense.
Measure the end clearance, two different measurements, and you're good to go.

[pilote999]

They offered me the $1000 because they need my case to rebuid a certified engine for another custumer. They told me, because I have a homebuit, they can install an other good case (but not a D2J) and save me dollars with no problems!

They are supposed to choose a good case that is compatible with all my parts (160 HP crank and bearings).

Thanks a lot for your comments!

[rhill]

Originally Posted by jrs14855

The original poster is in Canada where the rules are probably more stringent. They probably require a specific part number for the 0 320D, where with an experimental you can mix and match.
I would take the 1k IF the shop will measure the fit of your crank in the new case. The only issue with E series engines is that some of them will not support constant speed props. These are the ones with 0 235 front mains. An experimental 160 hp can be built using the 0 235 front mains.
The advice about the case and crank living together is total nonsense.
Measure the end clearance, two different measurements, and you're good to go.

OK, How about hours,If you know the case you've got is 2300TT and never been cut, the case your getting is on its third or fourth rebuild and is under deck height or darn close how is that a good deal,If the end play is too short it has to be ground and too wide it has to be welded and then ground,Case shops charge $700..ext flat rate, what about the nose bearing,CS option.Certified used cases are worth 3k. Yes you can mate up different parts but in this case why would you want to.This deal stinks to high heaven,I'd pull my parts and go else where just for this suggestion alone.
RHill

[6 Gun]

Red flag find a new shop! They are not your best friend.
Bob

[osxuser]

The D2J has a little bit of a unique case from what I remember, front gov mount pad at least. Might want to make sure your baffling and such will fit if this is already installed on an aircraft. Personally, I'd stay with the 160hp case if you already own it.

[RV-4]

Raynald

I have an idea which shop is offering you the trade...

If it ain't broke , don't fix it...What you have works, stick to it...

Bon vol..

Bruno
rv4@videotron.ca