Gonna have the transmission rebuilt, while it's out, I'm going to do the up-pipes and replace the flex-plate, what else do I need to think about with the transmission out?

Thanks

Mike

 

I'd give some thought to the oil galley plugs on the back of each head.

 

Check the aluminum adapter plate for cracks especially near where the starter mounts.
Put full-depth steel thread inserts into the starter bolt holes.
Run a drain tube from the valley drain at the back of the engine down to the hole at the bottom of the block.
Check condition of transmission mounts.
Check condition of all transmission connector pigtails.
I’m assuming the TSS and OSS on the transmission will get replaced during the rebuild but check them anyway.

 

I assume these are helicoils? Any details on exactly what i need to procure and have on hand would be appreciated. I’ll be in there this spring too.

 

Sorry I just can't...

"Tranny, comming out, what else to do"

Mike...purchase a tutu a purse and a miniature dog of some sort...

I am honestly at a loss to answer this one... does anybody have a good link for social services?

Ken

 

I would hazard not helicoils, but actual threaded sleeves. you over bore, tap too match the outside of the sleeve and then using the supplied install tool, install the sleeves with threadlocker. it gives you the wear resistance of steel threads vice the aluminum threads so its not as apt to strip out. also usually the outside of the insert's threads are a different pitch that gives it more strength in the aluminum as well.

 

Been researching a little. Thread is M10x1.5. Some guys have used helicoils. I have hears of a product like you describe called timesert (sp). I also saw that perhaps longer bolts belong on the starter to grab more of the thread length. OEM only engage part of the thread…If i use helicoils I have located extra length ones in 20 and 25mm, so they are available. I assume with tranny out there is a lot more room to do this from the back.

 

yes and now, the inserts will always be stronger over the helicoils. helicoils are a quick and dirty repair.. inserts are the same a cylinder liner.. way more capable than something like a helicoil.

 

Oops, totally forgot about this thread. Yes, TimeSerts is what I was thinking of.

 

Great, I found a timesert kit with 20 and 22mm length inserts, assume that is plenty of thread? Do you pull the bracket and install on the bench or right in the truck?

 

Easier to take the plate off and do it on the bench since you have the tranny (*snicker*) out. I forget which length to get. Measure the thickness of the plate and go from there.

Be sure to get the timesert install tool. You don’t want to hammer on the pins directly and bend them halfway through installation.

EDIT: Oh you’re getting the kit which should have the tool. Good man. 👍

 

I’ve seen the style with the pins also. Timesert install is more similar to helicoil.

 

Sorry. I got my thread inserts mixed up. I actually prefer KeenSerts then.

 

I used to use time-serts on spark plug threads when the threads would fail and the spark plugs would blow out of air cooled Type 1 (old beetle) cylinder heads. They usually always came back out on the spark plug even if you used thread locker on the outside of the insert and anti-seize on the spark plug. But it was that or a new cylinder head. So I'm not a big fan of them for a few reasons. I've found for my self anyway that helicoils have better staying power, you just have to be dead-on straight when you drill out the old threads. (Use a jig). And then turn it into the new threads until nothing is poking back up out of the hole. It's made slightly larger in diameter than the threaded hole it's going into so it kind of spring loads itself onto the outer walls and holds itself there pretty much forever. The material is tempered much stronger than the bolt so there's no chance of over torqueing the bolt and having the helicoil fail. It will either break the bolt or pull the helicoil from the aluminum.
Food for thought.

 

interesting you bring that up, time-serts fail with spark plugs because the heads flexed a bit under compression on Kohler K341 engines

i have one that you can see were some sand was in the metal and blew a hole though and the cooling fins have cracks on the ends from 53 years of running it