Mating engine to transmission: bell housing and drive shaft alignment
#1
Mating engine to transmission: bell housing and drive shaft alignment
So, quick question:
I've got the engine in the bay, all lined up to the transmission.
Now, the engine and bell housing are about 0.5" short of touching and I've got a couple of bolts (all around) in their holes.
Should I just slowly tighten them all up or MUST I push the engine fully agains the transmission before putting bolts in?
I think the bolts will all go in without too much effort.
Tell me!
I've got the engine in the bay, all lined up to the transmission.
Now, the engine and bell housing are about 0.5" short of touching and I've got a couple of bolts (all around) in their holes.
Should I just slowly tighten them all up or MUST I push the engine fully agains the transmission before putting bolts in?
I think the bolts will all go in without too much effort.
Tell me!
#2
You can tighten the bolts slowly to get them mated as long as they are not cross-threaded and everything is lined up. You are sure the input shaft splines are properly in the clutch disk splines?
Personally I always try to get them together as much as possible then tighten the bolts to make sure I dont mess it up. Often I find that I get about .5" apart and then tighten the bolts just like you are describing.
Personally I always try to get them together as much as possible then tighten the bolts to make sure I dont mess it up. Often I find that I get about .5" apart and then tighten the bolts just like you are describing.
#6
Former Vendor
iTrader: (31)
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 15,442
Total Cats: 2,099
Just go evenly. It never goes together particularly nice, but eventually it will go together. Throw it in gear and spin the diff occasionally like you were going to as you tighten everything down.
#8
I've gone through this twice now. One time, the throwout bearing failed to seat properly, causing the clutch pedal to work in reverse of normal operation (explain that). Last weekend, I realized the 1.6 thermostat housing on the back of the head was hitting the firewall.
Other than that, they've mated smoothly many times. I'm in agreeance with everyone else, as long as it's straight and the driveshaft spins with it in gear, you're good to go.
Other than that, they've mated smoothly many times. I'm in agreeance with everyone else, as long as it's straight and the driveshaft spins with it in gear, you're good to go.
#9
I had this same thing happen to me when replacing a throwout bearing... Just wiggle it around and it should seat properly. Or you can do what we did and pull it back off and try again. On the second attempt, it slide right into place almost instantly. Our guess was that it was in a bind when being placed on the engine. Good luck.
#11
This
I've always had it completely flush before I started tightening. It should sit fine on the dowels if everything's straight.
The only time it gave me a problem I hadn't aligned the clutch properly before tightening down...fought it for an hour. Borrowed a real alignment tool, and it slipped right in.
I've always had it completely flush before I started tightening. It should sit fine on the dowels if everything's straight.
The only time it gave me a problem I hadn't aligned the clutch properly before tightening down...fought it for an hour. Borrowed a real alignment tool, and it slipped right in.
#16
Grammar fail. And this, from you?
BTW, shortly after post #8 I went on it. Trans in gear and all was good, tightened all bolts and all is well.
Keenonracing | Facebook
BTW, shortly after post #8 I went on it. Trans in gear and all was good, tightened all bolts and all is well.
Keenonracing | Facebook
Thread
Thread Starter
Forum
Replies
Last Post
StratoBlue1109
Miata parts for sale/trade
21
09-30-2018 01:09 PM