Angle of engine
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Angle of engine
Posted: April 01 2008 11:20 PM
 
Jim Dominico (aka jimd) [ View ] [ Email ] [ Car Ads ] [ Blogs ]
New Jersey
(973) 492-7958
 
What should the angle of the engine be when installed---horizontal or angled down towards the rear? Is there a max angle before problems start? Small block Chevy with Tremec TKO.
 
 
Comments
 
Posted by aosborn  -  04/02/2008 01:15 AM
Generally speaking, the engine should be mounted in the chassis so the carburetor mounting surface is level front to rear, and side to side with the car sitting at the finished ride height and rake. The angle is more critical with a carburetor as the float level is affected by the angle of the engine. Typically with about 1/2 degree of rake (lower in the front) in the chassis, the engine centerline (crankshaft) is angled down toward the rear axle about 3 degrees. Consequently the pinion angle of the rear axle should be up toward the front of the car the same amount as the engine tilts down to the rear to keep the u-joint angles to a minimum.
aosborn [ View ] [ Email ] [ Blogs ] [ Car Ads ] Olympia, Washington
 
Posted by OGS41  -  04/02/2008 05:31 PM
AGREE WITH AOSBORN. CHASSIS ENGINEERING SETS UP THEIR FRAMES WITH 4 DEGREES ENGINE/TRANS DOWNWARD ANGLE AND MOST RODS I HAVE SEEN HAVE BEEN EITHER 3 OR 4 DEGREES.
OGS41 [ View ] [ Email ] [ Blogs ] [ Car Ads ] SIMSBURY, Connecticutt
 
Posted by pooch  -  04/02/2008 10:46 PM
CRANK 3 DEGREES DOWN AT THE DAMPER AND PINION 3 DEGREES UP AT THE PINION
Needle bg's lube better!

DRIVE IT LIKE YOU STOLE IT!
BUSTER
pooch [ View ] [ Email ] [ Blogs ] [ Car Ads ] albany, Oregon
 
Posted by ol bear  -  04/03/2008 09:08 AM
SEARS SELLS A GREAT PROTRACTOR VERY CHEAP ,, GREAT INVESTMENT ,, THESE GUYS R SPOT ON ,,,,LES AKA OL BEAR
OL BEAR [ View ] [ Email ] [ Blogs ] [ Car Ads ] crown point, Indiana
 
Posted by Starfire  -  04/03/2008 05:00 PM
I'm surprised no one has mentioned the degree too much angle in either direction affects the oil level in the pan and potentially creating an oil pickup problem. Doesn't take too much of an angle to in effect reduce oil available to the pickup by half a quart, maybe even more. Flat level at the carb mounting and the oil pan being absolutely parallel to the ground is the best rule of thumb.
Starfire [ View ] [ Email ] [ Blogs ] [ Car Ads ] Weimar, Texas
 
Posted by dixie  -  04/03/2008 08:29 PM
WELL I DO DECLARE
jim grace [ View ] [ Email ] [ Blogs ] [ Car Ads ] dade city, Florida Charter Member since January 2006
 
Posted by srodder39  -  04/03/2008 10:00 PM
The sears digital electronic level makes the job a lot easier especially when a protractor is in a hard to read place. If you have a Craftsman Club card you can catch it on sale for $20 at Sears .
srodder39 [ View ] [ Email ] [ Blogs ] [ Car Ads ] santa fe, Texas
 
Posted by aosborn  -  04/04/2008 12:49 AM
The pan mounting surface (gasket surface) is parallel to the crank centerline typically, and the bottom of the oil pan is typically parallel to the ground with that 3-4 degree setting. I always level the carb as it is MUCH more sensitive to being level to control the float level than the oil in the pan is to the pickup, and it looks way bad to have the carb and air cleaner at an angle. Level the carb surface and the rest will take care of itself...also, don't be afraid to offset the engine to the left, right or even slightly diagonal in the chassis to help with clearance problems.
aosborn [ View ] [ Email ] [ Blogs ] [ Car Ads ] Olympia, Washington
 
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