sewebster Posted July 23, 2011 Share Posted July 23, 2011 (edited) Ok, so I've got this tick from my engine... engine is newly rebuilt, so I'd like to think it's not something major Tried finding the source of the tick by listening through a pry bar touching all over the place but no dice. Definitely seems to be coming from the driver's side. Unplugging each spark plug one at a time didn't silence it, idle changed each time too. I had the plenum off and wiggled around all the rockers/lifters and everything was tight. I had the oil pan off recently too and nothing was wiggling down there either. Compression test is good. Injectors were just cleaned, new ignition stuff etc etc. I'm hoping it's my manifolds, but dunno if this is the "infamous" tick or not. I know none of the studs are broken because I tapped them to M10 when I did the rebuilt. Manifolds were slightly warped, but I used a feeler (with no gasket) and when the bolts were tightened there were no significant gaps. Maybe it's time for the Thorley's... Anyway, happy for any thoughts, but maybe it's hard through video. Thanks guys. Edit: I should also mention that I replaced all the lifters at the rebuild, followed the correct run in procedure, none of them were soft etc. etc. Doesn't mean one hasn't seized up I guess, but... Edited July 23, 2011 by sewebster Link to comment Share on other sites More sharing options...
Slick Posted July 24, 2011 Share Posted July 24, 2011 sounds just like studs... have you retightened them since the build? did you check the manifolds for cracks? Link to comment Share on other sites More sharing options...
adamzan Posted July 24, 2011 Share Posted July 24, 2011 Thats what mine sounds like and everyone tells me its the lifters. Maybe pull off those exhaust shield and check for any black marks where the leaks would be? Link to comment Share on other sites More sharing options...
silverton Posted July 24, 2011 Share Posted July 24, 2011 I hear injectors and wind noise from the fan. Link to comment Share on other sites More sharing options...
sewebster Posted July 24, 2011 Author Share Posted July 24, 2011 Well pulling the shields and looking around and re-torqueing is pretty easy so I guess I'll do that. Sorry about the wind noise, heh, didn't realize when I was filming. Another reason for an e-fan I guess It's not just the injectors. I can hear those too, but this is something else. It sounds like valve noise to me, but I just can't find anything. I guess if it's not the manifolds and it IS valve noise then it isn't SUCH a bad thing. I guess I'm just worried about a bottom end problem, but hopefully I have no reason to... Link to comment Share on other sites More sharing options...
Slick Posted July 24, 2011 Share Posted July 24, 2011 (edited) if everything is good with the manifolds/studs, then maybe check the valves after all other exterior possibilities have been exhausted. when the t belt was installed the cams were lined up correctly with the timing cover marks? maybe the 1 cam is a bit out? when you revved it up may be my bad hearing, but sounded like there was some hesitation before it really revved? Edited July 24, 2011 by Slick Link to comment Share on other sites More sharing options...
JamesRich Posted July 24, 2011 Share Posted July 24, 2011 It's hard to tell with the wind noise but I'm pretty sure I hear an exhaust leak when you rev it. James Link to comment Share on other sites More sharing options...
Kingman Posted July 24, 2011 Share Posted July 24, 2011 How about this. Rev it up slowly to about 5K with very little skinny pedal. Then mash on it. If it ticks when you mash on it, it's the manifold studs. All of the exhaust needs to escape NOW due to the sudden load causing more ticking. Link to comment Share on other sites More sharing options...
sewebster Posted July 24, 2011 Author Share Posted July 24, 2011 Thanks for the tips guys. I'll report back when I have a chance to check it out. Shouldn't take long, except I've got a 3 month old, so, sometimes things end up on the back burner! Slick: I counted the timing belt teeth several times, so it should be all timed correctly. Link to comment Share on other sites More sharing options...
sewebster Posted July 24, 2011 Author Share Posted July 24, 2011 (edited) Kid is having a sleepy afternoon so I got outside... the manifolds were somewhat loose! Tightened it up and the noise seems to be gone. Yeehaw! I guess part of the problem is me guessing at the torque, since I upgraded to M10. I have it at 20 ft-lbs, which isn't much for 10mm, but the spec for the 8mm studs is also pretty low and I just did some conversion to try to get about the same bolt tension. I guess I need to look up an FSM from an engine with the 10mm, like the VG33. Edit: '96 FSM says manifold nuts are 21-25 ft-lbs, so maybe I can even go a bit tighter. Didn't put the covers back on yet anyway. Edited July 24, 2011 by sewebster Link to comment Share on other sites More sharing options...
WarehouseRat Posted July 25, 2011 Share Posted July 25, 2011 take the torque to 28ft lbs ftw Link to comment Share on other sites More sharing options...
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