Question about Lycoming engine type

pgroell · #1 02-20-2007, 01:53 PM

Hello all,

I have been offered a deal on a Lycoming O360-A1G6 engine (ex Grumman GA7). The only thing I'm able to find about the engine is that it has horizontal carburetor and induction housing.
My questions are :
- is this a forward facing induction
- would this engine be suitable for a RV-7A
- if suitable, what would the most appropriate firewall forward kit be.
Thanks for your help

az_gila · #2 02-20-2007, 02:13 PM

Quote:

Originally Posted by pgroell

Hello all,

I have been offered a deal on a Lycoming O360-A1G6 engine (ex Grumman GA7). The only thing I'm able to find about the engine is that it has horizontal carburetor and induction housing.
My questions are :
- is this a forward facing induction
- would this engine be suitable for a RV-7A
- if suitable, what would the most appropriate firewall forward kit be.
Thanks for your help

I don't think it's from a Grumman GA-7... this is from the Type Certificate...

Engine
2 Lycoming O-320-D1D with Marvel Schebler Carburetor HA - 6 Setting 10-5189 or 10-5224

gil in Tucson

pgroell · #3 02-20-2007, 02:22 PM

Well in fact it is and it is not.
In France , Socata tried to resurect the GA7.
It became the TBM 360, but had 180hp engines, Lycoming O360-A1G6.
The engine I might buy, is one of the prototypes engine (100h on it, and 4 years in storage), as the prototype was returned to the original GA7 type certificate with O320 D1D engines.

Allen Barrett · #4 02-20-2007, 04:19 PM

The engine you decride is not a horizontal sump. A carburator won't work except on a vertical induction sump (float bowl). Don't know what FWF kit you need though. Call Scott at Vans. Good guy to work with.

Allen

az_gila · #5 02-20-2007, 08:09 PM

Quote:

Originally Posted by Allen Barrett

The engine you decride is not a horizontal sump. A carburator won't work except on a vertical induction sump (float bowl). Don't know what FWF kit you need though. Call Scott at Vans. Good guy to work with.

Allen

Allen... Grumman liked using the horizontal HA-6 carb in their 180 HP installations - such as the O-360-A4K on my Tiger... this has a rear facing horizontal carb. - with a hole on the aft face of the sump.

Perhaps Socata used something similar when they upgraded the 160 HP to 180 HP in the same nacelles?

gil in Tucson... with a horizontal carb. sitting in the hangar...

Correction - talking about carbs. in general here... not specific RV installations. If the rear facing carb would fit, it would be way custom and a real squeeze... if it fit - and certainly not with a nose gear...

David-aviator · #6 02-20-2007, 09:42 PM

According to my Lycoming info, the O-360-A1G6 was originally certified for the Aero Commander, which Aero Commander model it does not say.

The engine has a dry weight of 300 lbs., counter weights, a Marvel H6 carburetor, dynafocal mount, Bendix mags, provision for CS prop, and parallel valve cylinders. H=19.22, W=33.37, L=31.82, the engine should fit nicely under the Van's cowl.

By comparison, Van's sells the 0-360-A1A which measures 24.59, 33.37, 29.56 respectively and weighs 290 lbs.

Van's also sells the I0-360-A1B6 which measures 19.35, 34.25, 30.70, respectively and weighs 333 lbs.

az_gila · #7 02-20-2007, 10:53 PM

David... is the carb included in those dimensions?

If it's like the Tiger, the carb protrudes rearward quite a way...

You can see the horizontal HA-6 carb and the pancake air cleaner in the picture...

gil in Tucson

N941WR · #8 02-21-2007, 08:32 AM

Quote:

Originally Posted by az_gila

You can see the horizontal HA-6 carb and the pancake air cleaner in the picture...

gil in Tucson

Man, that is a LONG engine mount. Much longer than what is used in an RV-7.

Could he possibly change the sump and carb? It might still be a good deal, if the price is right for those parts.

pgroell · #9 02-21-2007, 08:43 AM

Well, thanks all for your input.
I'm going to see the engine next week, and have some more informations.

David-aviator · #10 02-22-2007, 07:54 AM

Quote:

Originally Posted by az_gila

David... is the carb included in those dimensions?

If it's like the Tiger, the carb protrudes rearward quite a way...

You can see the horizontal HA-6 carb and the pancake air cleaner in the picture...

gil in Tucson

Gil, I don't know. The spec sheet simple says what I reported. I would assume the length dimension would include the carb, but it may not include the air filter.