B Looper

[Danny Pigott]

I have a B Looper that has a 20H crankcase on it. Any body know the history of this, were any made this way at Quincy, i bought this engine in 1971 from Jim Reid in Ark.

[fbref5269]

danny,

is you post the serial numer in the thread paul christner should post some info on the engine.

the the crankcases on the loopers were the merc ones. toward the end of production quincy cast their own crankcases for the 4 cyl models.

frank

[Gene East]

I suspect the 20-H case was a retrofit.

A Looper case has 2 ports from the valve body to the cylinders like the 3rd port on a Mercury deflector.

A 20-H case does not enough material for the second port. Plus the 20-H is not as tight, too much volume.

I doubt if that engine produces full HP, but it probably would run well enough to enjoy a nice ride.

Also the Looper case is a 2 piece case. No heating of the case and freezing the crank for hit or miss assembly.

I loved my 20-H, but assembling a Looper was much easier.

[Danny Pigott]

Gene, This is a tight 20h case. I think it has the ports in the back of the reed cage in to the block. I will have to look an see maybe not as big as a looper case. Serial # is FB-91 it has this # on both the block an case.

[Gene East]

Danny,

A lot of Loopers were sold as kits. It's possible that may be the case with your engine. The original owner may have just bought cylinders,head and pipes and assembled the parts himself.

I can't recall a complete engine leaving Quincy built on a 20-H case.

Perhaps Paul will pick up on this post and enlighten us.

[Original Looper 1]

Danny, Gene & company:

As to the 20H crankcases leaving Quincy on an A or B Looper complete, I am in agreement with Gene. I have yet to be shown any acceptable documentation that proves that A or B Loopers left Quincy Welding with them originally.

As to the 4 cylinder Loopers, the very earliest ones did use the Mercury front crankcase half after it was line bored at Quincy Welding, along with the intermediate case. Gene brings up a good point - there were many Loopers A thru XF that left Quincy Welding in kit form. We all know how creative people can be, given the opportunity.

Danny, the original owner on record in the Quincy Welding serial number book for FB-91 was Bud Jewels. That's all the info I have on this particular Looper, unless I find a dyno card on it. If I do, I will post it later.

thanks,

Paul A Christner