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Engine Vibrating Posted By: 84cam On: 10-05-2008 @ 10:52:29 Reply | Edit Hey guys I found this site was hoping yall could help me.I had a engine built for my 84camaro.The problem I am having is a vibration from 3000rpms and up.The rotating assembly is balanced.Could it not have been balanced correctly or could anything else cause a vibration.Any suggestions would help.THANKS Posted By: Pocket On: 10-05-2008 @ 20:34:16 Reply | Top | Edit Misfire? Posted By: LeadFootedRacer On: 10-05-2008 @ 20:39:48 Reply | Top | Edit if it wasn't balanced properly, i have a feeling it would do more than just vibrate. the balance of an engine is pretty critical. -- 1998 Dodge Neon Sport - 2.0 DOHC - MTx - 30.3 MPG City - Daily Driver 1984 Firebird - No Motor or Trans - Checkered Racing 4 Link Backhalf - M/T Sportsman 31x18.5 on 15x15 Weld Pro Stars --Fbody.com Site Donator -- Posted By: roubenbird On: 10-06-2008 @ 11:55:43 Reply | Top | Edit While it's moving or no? -- Being rebuilt, It'll take a while: 
WS6 3o5 TBI 88' Formula, 670cfm Holley Projection Throttle Body Holley Projection Intake Mainfold, Underdrive Pulley,Dual Snorkle & Factory Cowl Induction,now with short straight pipes, UMI Subframe connectors, Fourth Gen seats, Three row Radiator, Posi rear end (2.73),TPI heads, 1.6 roller rockers 15.543 @ 88.21mph Posted By: 84cam On: 10-06-2008 @ 19:27:19 Reply | Top | Edit While it is moving and in park.I unbolted the converter and revved it and still a vibration.U can only feel it while sitting in the car. Posted By: LeadFootedRacer On: 10-06-2008 @ 21:18:03 Reply | Top | Edit bad motor mount? -- 1998 Dodge Neon Sport - 2.0 DOHC - MTx - 30.3 MPG City - Daily Driver 1984 Firebird - No Motor or Trans - Checkered Racing 4 Link Backhalf - M/T Sportsman 31x18.5 on 15x15 Weld Pro Stars --Fbody.com Site Donator -- Posted By: Pocket On: 10-06-2008 @ 23:07:45 Reply | Top | Edit Check: plugs vacuum lines flexplate is in correct position correct balance flexplate is being used correct balancer is being used crank pulley is strait headers are not crushed Posted By: LeadFootedRacer On: 10-07-2008 @ 18:11:11 Reply | Top | Edit flexplate cracked? -- 1998 Dodge Neon Sport - 2.0 DOHC - MTx - 30.3 MPG City - Daily Driver 1984 Firebird - No Motor or Trans - Checkered Racing 4 Link Backhalf - M/T Sportsman 31x18.5 on 15x15 Weld Pro Stars --Fbody.com Site Donator -- Posted By: 84cam On: 10-07-2008 @ 18:34:26 Reply | Top | Edit Thanks for all the responses.It has solid motor mounts.I dont think the flywheel is cracked.The fly wheel dont wobble.The balancer came with the rotating assembly.Doesnt have a pulley Plugs are ok.Just frustrating new engine with problems. Posted By: LeadFootedRacer On: 10-07-2008 @ 19:31:58 Reply | Top | Edit oh. solid mounts will do that dude -- 1998 Dodge Neon Sport - 2.0 DOHC - MTx - 30.3 MPG City - Daily Driver 1984 Firebird - No Motor or Trans - Checkered Racing 4 Link Backhalf - M/T Sportsman 31x18.5 on 15x15 Weld Pro Stars --Fbody.com Site Donator -- Posted By: 84cam On: 10-07-2008 @ 21:07:05 Reply | Top | Edit Didnt know that.Thanks guys.Great site.I hope that is all it is.Ready to hit the track. Posted By: LeadFootedRacer On: 10-07-2008 @ 22:07:51 Reply | Top | Edit my dad's 31 ford had solid motor mounts in it. its no fbody, but it was along the same things your describing. it has a zz4 crate motor in it, and we put in the solid mounts. because there is next to nothing to the car, it vibrated so bad it wasn't even driveable. so i take that lil tid-bit of infromation, and put it with what your saying, it makes pretty good sense. i'd say go for a set of poly mounts and see what happens there. they are still very stiff, but should take out some if not all the vibrations. if that doesnt work, go back to a stock style rubber one. -- 1998 Dodge Neon Sport - 2.0 DOHC - MTx - 30.3 MPG City - Daily Driver 1984 Firebird - No Motor or Trans - Checkered Racing 4 Link Backhalf - M/T Sportsman 31x18.5 on 15x15 Weld Pro Stars --Fbody.com Site Donator -- Posted By: LeadFootedRacer On: 10-17-2008 @ 23:31:54 Reply | Top | Edit any update on this? -- 1998 Dodge Neon Sport - 2.0 DOHC - MTx - 30.3 MPG City - Daily Driver 1984 Firebird - No Motor or Trans - Checkered Racing 4 Link Backhalf - M/T Sportsman 31x18.5 on 15x15 Weld Pro Stars --Fbody.com Site Donator -- Posted By: 84cam On: 10-18-2008 @ 16:41:23 Reply | Top | Edit Yes I feel like a idiot.My crank didnt have a dowell pin in it for the flywheel so I didnt have the hole in the crank and the hole in the flywheel lined up.Pulled the trans turned the flywheel so the two holes lined up crunk it up.Runs smooth.I hope it didnt beat the bearings tooo bad.
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