22re noise under load

The Luke · Mar 13, 2014

I've been chasing a mystery noise for a while. Maybe ya'll can help?

Background: 86 pickup 22re/auto. Rebuilt 22re with less than 1k miles. Old motor had the same noise before it was replaced. ONLY HAPPENS WHILE UNDER LOAD. You can kinda feel it in the drivers floor board. Every exhaust gasket is new. Currently running 89 octane. I ran seafoam through the brake booster vacuum line. No visible exhaust leaks.

Video of noise(you can hear it ticking when under acceleration) sorry for the crappy video, I was moving the phone around while driving and trying to find the best place to hear the noise: http://youtu.be/a8JoPTOtxkU

Little help???

FlapDisk · Mar 13, 2014

Its going to asplode.

TBItoy · Mar 13, 2014

Re: Re: 22re noise under load

Set valve lash/rocker clearance correctly?
Timing?

I can't really hear anything watching it on my phone, the speaker is garbage

The Luke · Mar 13, 2014

I'll double check. But it was right when I had the valve cover off two weeks ago. Timing is set at 5*. It sounds PERFECT. until it's in gear and driving down the road. You can Kick it in neutral while driving and it goes away.

bluetoy · Mar 13, 2014

Did you replace the wrist pin bushing when you did the rebuild? 22R's are notorious for wrist pin noise.

GONOVRIT · Mar 13, 2014

Friend of mine brought his new to him 22r truck by last night, its doing the same thing.

The Luke · Mar 13, 2014

bluetoy said:
Did you replace the wrist pin bushing when you did the rebuild? 22R's are notorious for wrist pin noise.

friend of mine rebuilt it before I ever bought it. It has 100% new everything minus block. Even the head was new.

bluetoy · Mar 13, 2014

Is it louder at light throttle and quiet down under heavy load or does it get louder the harder you run it? I couldn't tell much from the video. The usual suspects for engine noise on a 22R are valve lash, wrist pins, or rod bearings.

If the shop that did the machine work honed any of the wrist pin bushings too big, it will rattle like crazy. I've had to have them reworked several times because the shop honed them too big. I'm a machinist myself so I tend to be overly picky about other people's work.

The Luke · Mar 13, 2014

Honestly it's pretty consistent. Just speeds up with higher rpms.

Rjhoward32006 · Mar 13, 2014

Sounds to me like a valve lash problem also.

TBItoy · Mar 13, 2014

if the exact same sound was there before the engine swap, makes me think it might be the transmission?

Does it do it in reverse?

RustyC · Mar 13, 2014

Cracked flexplate?

muddinmetal · Mar 13, 2014

RustyC said:
Cracked flexplate?

^^^^^ I waa thinking it might be something in that area

Jcampbell54 · Mar 13, 2014

These motors make noise. I always set valve lash a little tighter than what spec calls for. Have you readjusted them since you've had it? If it's new you'll have to lash the valves after everything settles.

Sent from the mans IPhone.

The Luke · Mar 13, 2014

Yes in reverse. Drove it today, no noise. Last night, it did it. It sounds like an exhaust leak. I know the manifold dumps behind the pedals, which is where I feel it. But it's not leaking there. Possible it's only leaking under load due to higher exhaust pressure?? I guess I can jack the back end up, chalk the front tires, drop it in gear and see if it still makes the noise. That'll take a lot of the load off and might help narrow it down to the transmission. Which btw only has about 15k on it. I

TBItoy · Mar 13, 2014

may be in the torque converter ? or thrust from the trans affecting something ? if some of the thrust washers/bearings in the trans weren't replaced or replaced incorrectly.

Oh, and those trucks are bad to crack the Y pipe right below the manifold gaskets.

usually on the back side, right against the bell housing where it's hard to find.

The Luke · Mar 13, 2014

I'll tear into it this weekend. Hopefully I'll find something. If it's the trans, I'm throwing a manual with dual cases in, just because.

TBItoy · Mar 13, 2014

The Luke said:
I'll tear into it this weekend. Hopefully I'll find something. If it's the trans, I'm throwing a manual with dual cases in, just because.

I'd do that anyway.

early Toyota auto and tcases are stupid