Hey guys, first post here! I've been lurking around the forums here and there since picking up my model B tote goat a little bit ago. I had one of these growing up and I'm stoked to be restoring this one, but alas I've already run into a conundrum and would love to have some opinions on it. I'm hoping someone has seen a 6.5 go into a model B.
The problem(s) I found today is that first, the stock air filter box prevents the engine from lining up with the engine mounting bolts, as is. No problem, get an aftermarket air filter. So, I removed the air filter, and soon found out that when trying to line up the clutch so the belt is straight, the bottom of the carburetor is hitting dead center on the right side 45 degree frame member (check out the frame here).
(Not sure why the photo uploaded rotated? Sorry about that.)
Also, given the large size of the rear drive pulley, and the belt going between it and the clutch, I'm concerned that the exhaust placement might be an issue. But, I'm thinking a custom bent pipe could be made to sharply avoid the belt, come up, and then track right down the middle of the jackshaft.
The options I've come up with are:
(I should mention that I have only one small welding experience under my belt, and no equipment, so I'll be having to get these mods done at a local shop.)
1. Cut off the clutch guard U-shaped frame member, cut the support bar that is welded to the front middle of the engine mounting plate, and essentially weld on a new mounting plate that extends further forward and reweld the middle support bar to the front of the new plate. The issue I see with this is the change in distance for the belt. This is my first dive into a project like this, so I'm not sure if it would be easy or not to find a belt that would fit such an arbitrary setup.
2. Modify the 45 degree frame member, cutting it off and trying to weld in a new support in the remaining space after the engine is properly mounted. The problem with this is my lack of engineering background, trying to find a solution that won't significantly diminish the integrity of the frame. If I try to push the bottom end of the support rearward, it intrudes on the foot peg hole. If I try to move the upper end of the support elsewhere, I'm severely limited in positions because on either side of the end currently is a bolt hole for securing the jackshaft.
3. Return the engine and pay the 20% restocking fee, or try and sell the engine on craigslist, and go with a different smaller engine. The main reason I chose this engine is the HP/price point though, and the cult following/parts availability. I don't have much more than $100 to spend on an engine; definitely not $2-300. So, I'm not sure where I'd go if not for the Predator.
Please if you have any suggestions, criticisms, or additional ideas, I'd love to hear them. I was hoping this would be a pretty simple toe dipping into a restoration project, but obviously I'm already starting to learn things the hard way :grind: :facepalm: :hack: :mad2: . Looking forward to hearing your guys' opinions, and sharing my progress so hopefully others can benefit from it as well.
The problem(s) I found today is that first, the stock air filter box prevents the engine from lining up with the engine mounting bolts, as is. No problem, get an aftermarket air filter. So, I removed the air filter, and soon found out that when trying to line up the clutch so the belt is straight, the bottom of the carburetor is hitting dead center on the right side 45 degree frame member (check out the frame here).

(Not sure why the photo uploaded rotated? Sorry about that.)
Also, given the large size of the rear drive pulley, and the belt going between it and the clutch, I'm concerned that the exhaust placement might be an issue. But, I'm thinking a custom bent pipe could be made to sharply avoid the belt, come up, and then track right down the middle of the jackshaft.
The options I've come up with are:
(I should mention that I have only one small welding experience under my belt, and no equipment, so I'll be having to get these mods done at a local shop.)
1. Cut off the clutch guard U-shaped frame member, cut the support bar that is welded to the front middle of the engine mounting plate, and essentially weld on a new mounting plate that extends further forward and reweld the middle support bar to the front of the new plate. The issue I see with this is the change in distance for the belt. This is my first dive into a project like this, so I'm not sure if it would be easy or not to find a belt that would fit such an arbitrary setup.
2. Modify the 45 degree frame member, cutting it off and trying to weld in a new support in the remaining space after the engine is properly mounted. The problem with this is my lack of engineering background, trying to find a solution that won't significantly diminish the integrity of the frame. If I try to push the bottom end of the support rearward, it intrudes on the foot peg hole. If I try to move the upper end of the support elsewhere, I'm severely limited in positions because on either side of the end currently is a bolt hole for securing the jackshaft.
3. Return the engine and pay the 20% restocking fee, or try and sell the engine on craigslist, and go with a different smaller engine. The main reason I chose this engine is the HP/price point though, and the cult following/parts availability. I don't have much more than $100 to spend on an engine; definitely not $2-300. So, I'm not sure where I'd go if not for the Predator.
Please if you have any suggestions, criticisms, or additional ideas, I'd love to hear them. I was hoping this would be a pretty simple toe dipping into a restoration project, but obviously I'm already starting to learn things the hard way :grind: :facepalm: :hack: :mad2: . Looking forward to hearing your guys' opinions, and sharing my progress so hopefully others can benefit from it as well.