I bought my 87 toyota with a 22r and a blown head gasket. I had never heard it run before I tore it apart. Ok, so I fixed a blown head gasket and installed a new engnbldr cam, timing chain and cover. When I first cranked the motor and was setting the timing, I noticed something wasn't right with the timing, so I pulled the valve cover to find that the gear on the bottom of the distributor was mangled. The drive gear on the cam looked fine so I replaced the distributor with another one. I set the timing and drove for probably 25 miles. There was a growling noise coming from the distributor and I thought it was the bearings. I pulled the valve cover to find both distributor gear and the drive gear gnawed up. My thoughts were that the first distributor gear must have messed up the drive gear. I replaced both the drive gear and the distributor again. I drove the truck a couple of miles and then pulled the valve cover to find that it is starting to gnaw the gears again. Why is it doing this? Please help! This is driving me nuts! Any help is appreciated!

Thanks
Trey
<TX>

 

take pics of where the distributor meets the gear, and where the distributor base sits into the head. Im talking about the parts that would be at the very very bottom of the distributor if you were holding it.

 

Oh, When I put the first distributor in, I had installed a new o-ring and it was hard to put in. I just assumed that I had some how installed it incorrectly. Not really sure that is even possible. I did torque the head down a little more than spec. I torqued it to 75#, which seemed to be pretty common on the forum.

Thanks
Trey
<TX>

 

going out to do it right now!

Thanks
Trey
<TX>

 

Did you re-install the shim (EFI) or fuel pump driver (carb) that sandwiches between the sprocket and dizzy drive gear?

 

Batterys are dead in my camera, so I have to wait for them to charge.

Yes, I reinstalled the fuel pump drive gear (Carb'd). I'll get some pics in a few.

Thanks
Trey
<TX>

 

ok, well when it does get up and running take a bunch of pics, different angles of the cam to distributor mounting, where the distributor goes into the head, and where the base of it sits in the head nearest the fuel pump, something sounds mis-alligned. like b.y.e. was hinting to

 

http://viewmorepics.myspace.com/ind...iewPicture&friendID=307125304&albumId=1549235

There is a link to my myspace album with photos of the gears. Please let me know what you think may be wrong.

Thanks
Trey
<TX>

 

it looks like the distributor is sitting too far into the head. You are going to need a new distributor gear and distributor...those two are junk now. This is kinda stumping me cause i can see your fuel pump accentric, and i know there are no shims between the gear, the accentric and the cam. You said you installed a new cam right, are you sure its riding where it is supposed to be in the head?

 

Ok, I added a pic of the cam and rockers to the album. It all looks like its supposed to, to me. I have now messed up 3 distributors and 2 drive gears.

Thanks
Trey
<TX>

 

am I losing my mind or is the dist gear on the cam in the wrong spot if I remember right it seems it's not installed correctly..

ignoring the fuel pump it seems it's not lined up right..

reference pic..

 

looks the same as mine to me. Does anybody else see a difference?

Trey

 

Are you using the correct distributor drive gear on the front of the cam? they make 2 different ones, the early one is longer for use with no fuel pump eccentric, and the later ones were shorter for use with the eccentric or spacer.

 

im not seeing what you are seeing....i could be wrong. did you do what nook said and swapped things around?

 

The drive gear came from a buddy of mine that has a bunch of yota parts. It was just laying loose in the bottom of the bucket but it did have the fuel pump eccentric on/with it. My original distibutor had a pressed on drive gear. The others I have installed have a pinned drive gear. Does this make a difference? I wouldn't of thought so?

Thanks
Trey

 

Gonna go out and compare drive gears and see if they are the same.

Thanks
Trey

 

Ok, drive gears are the same and the distributor gears (pressed and pinned) seam to be the same. I just don't understand, everythinglooks to be right. Any other ideas? I really enjoyed driving this truck, and want to get it fixed!

Thanks
Trey
<TX>

 

Somethings out of alignment somewhere, wrong distributor drive gear, timing gear on cam on backwards, fuel pump eccentric plus the spacer being used at the same time, or something binding not allowing everything to seat flately against the front of the cam,
The distributor drive gears measure aprox 1.430" on the short one, the one you should be using with just the fuel pump eccentric, the other gear is approx 1.525", those are measured from the face that seats against the cam to the outer face of the distributor gear.
Wish you the best,

 

Ok, I'll look it all over again. So, you are saying that the timing chain gear could be on backwards? The dot faces toward the radiator, so It should be on right, right?

Thanks again
Trey
<TX>

 

I was just listing ideas as to what could cause the misalignment, not saying it was, just that if it was it could possibly cause the problem, if the timing dot is facing outward towards radiator then its most likely installed correctly.