Gearbox synchros?

dac69er

Super Moderator
Got a call from the gearbox rebuilder this afternoon. It's all done :)
He said the synchros all seemed to work ok, so things look promising.

Going to go and pick it up tomorrow and hopefully fit at the weekend.

Again, I will update when I get a bit further with it. The proof will be in the testing........
 

dac69er

Super Moderator
Well the box is in. Selects all gears and feels as expected.
Only had about 1ltr of gearbox oil so havnt actually run it yet as I don't want to risk any damage.
I will get some more oil and give it a try. Only thing that I'm a bit concerned about is one of my inner joints is a bit wobbly where it goes into the box. I don't think this is an issue with the box though, I will see how it goes.
 
thanks for the feedback thus far...sounds promising
with regards to the inner joint, are you referring tot the in-borne joint/cup? Just by thinking about it, i'd take the cautious approach and get it replaced, especially with a rebuilt/new box.
wobbles and imbalances are not something you want around any rotating mass, it can pass lots of vibrations through surrounding areas and lead to failures especially at high rpms
 

SKINY

Lifer
Worth trying new circlips on the shaft ends first bud, I had a Micra years back popped the shaft a few times and a circlip fixed it, not to sure but Im near certain you can't buy the inner cup, just a full shaft from Mr T :eek:
 

dac69er

Super Moderator
I fully reconditioned the shafts a couple of years ago. You can get the complete inner joints from febest for about £50.
The issue isn't the circlip as the shafts won't come out, it just wobbled up/down and side to side more than it should when in place.

I removed the shafts today and found that the splines had been cut incorrectly on that joint, they were too thin. Obviously never noticed it when I first fit them!!!
Replaced with a spare joint I had and it's all as expected.

It now has oil in it so after a put the last few bits on and we have a dryish day, I will take it for a test run!
 

dac69er

Super Moderator
So the aftermarket inners where a bit crap then
well 1 was, the other one is fine. when i bought them, i must have only happened to look at the one that was decent when comparing to stock. it still did me a couple of years with no noticeable issues, im pretty particular about things so most people would have just fitted them and not worried.

at the end of the day, aftermarket parts are sometimes not as good as genuine, but at a fraction of the cost, they are usually worth a punt. eventually the supply of decent used inner joints will dry up, so being able to get something new is an option i wanted to try.

for the most part, i have found Febest parts pretty good quality. i will probably buy another and keep as a spare, will just double check the splines this time ;)
 

dac69er

Super Moderator
Update.

Finally got some time to take the car for a spin. Wasn't great to begin with tbh, but after the oil got round everything it seems to be good :)

No noises, no crunches and no leaks.

Didn't go very far, so time will tell whether it is fine under all conditions. Early signs seem promising though.

Full rebuild wasn't the cheapest option, but at least I know everything is replaced and should do another 20-30 years ;)
 

SKINY

Lifer
When I done the gt-four I had it up on stands level, once topped up I ran it a bit in 1st ticking over then stopped waited 10 mins then checked the level again :) in fact I cant think of a car I haven't did that with doing clutches etc
 

dac69er

Super Moderator
i was pretty confident it was going to be ok! im going to recheck the level now its been run and the oil has made its self round the box.
wont be using the car until the better weather, but now i know it works i can fix a few other bits over the next few months so its good to go in the spring :)
 

Skalabala

Member +
I think I would rather just go for the 6 speed, it loves high rpm gear crunching :)
Still gathering the info to exactly how to do this conversion. Some say just swap the bell housing or all the insides plus the rear cover.
 

Phil

Super Moderator
i bought that kit you mentioned from the US Duncan, was one that wasnt quite right (only found out after i had sold it on)

Chevrolet 4pot or something that ran the same c series box.

Phil
 

dac69er

Super Moderator
i bought that kit you mentioned from the US Duncan, was one that wasnt quite right (only found out after i had sold it on)

Chevrolet 4pot or something that ran the same c series box.

Phil
That's interesting to know for future. Strange it was only 1 that didn't fit right!?

Whilst it was quite costly, at least I have genuine synchros fitted so they should be decent quality and last.
 

Timmah

Member
these are the numbers i got from the Toyota EPC using my cars model number:

1st and 2nd gear: 33367-12031

3rd and 4th gear: 33368-12020

5th gear: 33369-12020


i called Toyota to see if these numbers had been superseded and was told these are the new numbers (33368-12020 hasnt changed):

33367-12031 -> 33367-12110

33369-12020 -> 33369-12030


these are different (other than 5th) to the numbers on ID-Workz. they also don't say that 2nd are 3rd are interchangeable with 1st and 4th respectively?:

1st: 33367-12070

4th: 33368-12060

5th: 33369-12030


my only thoughts are that the numbers i got from Toyota have been superseded more than once, with the final numbers being what ID-Workz now sell?
once i have the synchros to hand i can have a proper look with the gearbox rebuilder to see what we can do.
Hey dude,

Do these work with an EP82 gearbox? I've got one that's going to be rebuilt, but all I know is that it's from an EP82, but no specific gearbox code to go from.
 

dac69er

Super Moderator
It was an ep82 c52 box.
I'm not 100% convinced it's perfect, but it seems a lot better than it was.
 

Timmah

Member
It was an ep82 c52 box.
I'm not 100% convinced it's perfect, but it seems a lot better than it was.
Thanks for that - it should prove to be helpful! Getting the right part numbers here in NZ is proving to be a huge challenge.

When you say it's not perfect, what do you mean by that? I'm sure in my case, just having a working gearbox will be a fun! The current one has a pretty ruined third gear.. and on the track you can't change gears after one hot lap, lol!
 

dac69er

Super Moderator
Every now and again when cold you will get the odd baulky gearchange. It doesn't crunch.

Perhaps it's just how these boxes are as they are 30+ year old technology now.

I am pretty picky though, so could just be me expecting perfection ;)
 

SKINY

Lifer
Every now and again when cold you will get the odd baulky gearchange. It doesn't crunch.

Perhaps it's just how these boxes are as they are 30+ year old technology now.

I am pretty picky though, so could just be me expecting perfection ;)
Have you ruled out selector/cable/bushes wear bud ? Also, I fitted a short shifter and after about 6 months it was a real pig to get into 1,2 gears, thought the box was dead then ripped the shit shifter out and all was well again :)
 
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