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GTR 35 Stage 1 Bad Knock
http://www.mudmotortalk.com/mmt_v2/viewtopic.php?f=3&t=33672
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Author:  birdseye06 [ Thu Oct 25, 2012 3:02 pm ]
Post subject:  GTR 35 Stage 1 Bad Knock

I have 10 hours on brand new GTR 35 with Stage 1 rig. I noticed a bad knock on the left cylinder this weekend when I changed the break-in oil. I opened the valve covers and checked the valve lash - it was out by a few thousandths. I adjusted the lash, put the valve covers back on and the knock is still there. Anyone have any idea why I'm getting this knock? I'm having a lot of trouble getting a hold of anyone at GT.

Author:  Old School [ Thu Oct 25, 2012 3:03 pm ]
Post subject:  Re: GTR 35 Stage 1 Bad Knock

Best bet is to bring it in

Author:  take'emgator [ Thu Oct 25, 2012 3:05 pm ]
Post subject:  Re: GTR 35 Stage 1 Bad Knock

do not start motor again until you bring it in

Author:  birdseye06 [ Thu Oct 25, 2012 3:07 pm ]
Post subject:  Re: GTR 35 Stage 1 Bad Knock

That'd be about 1,000 miles for me.

Author:  Team Camo [ Thu Oct 25, 2012 3:15 pm ]
Post subject:  Re: GTR 35 Stage 1 Bad Knock

Call GT & ask for Hoyt. I hate to say what I think it is... :-(

Author:  take'emgator [ Thu Oct 25, 2012 3:16 pm ]
Post subject:  Re: GTR 35 Stage 1 Bad Knock

PM sent Bird

Author:  schmitt [ Fri Oct 26, 2012 4:52 pm ]
Post subject:  Re: GTR 35 Stage 1 Bad Knock

Shit, only 10hrs! Hope u get it up and going

Author:  take'emgator [ Fri Oct 26, 2012 5:21 pm ]
Post subject:  Re: GTR 35 Stage 1 Bad Knock

He's fixed up now

Author:  OwenDickeson [ Fri Oct 26, 2012 6:10 pm ]
Post subject:  Re: GTR 35 Stage 1 Bad Knock

well what was it?

Author:  barnes_53 [ Fri Oct 26, 2012 6:41 pm ]
Post subject:  Re: GTR 35 Stage 1 Bad Knock

Hey man I don't mean to make light of a bad thing gone wrong with your motor, but that knock you hear might be a box delivery at your front door by someone trying to leave you GT apparel.

Does suck though. I bought a brand new motor and had to get the kinks out too. Hope you get it worked out!

Author:  take'emgator [ Fri Oct 26, 2012 6:47 pm ]
Post subject:  Re: GTR 35 Stage 1 Bad Knock

What he heard was a normal roller rocker tapping, my motor did it from the get go on one side, never had a problem, i listened to it over the phone and we went over a couple things. hoyt also was in on it, we came to he conclusion to just run it. he has a Hoyt stage one on the motor which consist of cam, heads, exhaust. Told him if it gets louder to let us know

Author:  birdseye06 [ Sat Oct 27, 2012 9:01 pm ]
Post subject:  Re: GTR 35 Stage 1 Bad Knock

After talking to GT, I took the boat out and ran it like a scalded dog. Runs fine. The knocking is normal, I suppose. It's just strange to to hear it so much louder on one side over the other. They stand behind their motors though. Thanks for all the help.

Author:  take'emgator [ Sat Oct 27, 2012 9:19 pm ]
Post subject:  Re: GTR 35 Stage 1 Bad Knock

NOw that you have run it hard and its cooled when you get around to it check the lash just to be on the safe side and have a nice season! Glad we could help Bird

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