transmission leak

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   I have an 85 with a 1:1 vevet drive that runs fine for the 10 minutes before all the transmission oil leaks out. I have looked around and under the transmision while the engine is running and cant tell where its leaking, just the bilge full of oil. any suggestions?

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cml85 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: April-23-2007 Status: Offline Points: 5	Post Options Post Reply Quote cml85 Report Post Thanks(0) Quote Reply Topic: transmission leak Posted: April-23-2007 at 5:42pm
	I have an 85 with a 1:1 vevet drive that runs fine for the 10 minutes before all the transmission oil leaks out. I have looked around and under the transmision while the engine is running and cant tell where its leaking, just the bilge full of oil. any suggestions?

quick Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: April-22-2007 Location: Martinique Status: Offline Points: 5	Post Options Post Reply Quote quick Report Post Thanks(0) Quote Reply Posted: April-23-2007 at 8:19pm
	Hello! perhaps the rear oil pump joint behind the flywhell cover is hs? Good luck

eric lavine Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Grand Poobah Joined: August-13-2006 Location: United States Status: Offline Points: 13413	Post Options Post Reply Quote eric lavine Report Post Thanks(0) Quote Reply Posted: April-23-2007 at 9:41pm
	you may have a front seal going if it is leaking that quick, if i cant spot a leak i will die test them and use a black light, chances are if you cannot isolate the leak you will have to remove the trans, if you do and you find the seal pushed out of the front pump it is a good indication that the pump is failed. What happens in this case is the pump gets excessive clearance inside of the pumps housing and creates pressure and pushes the seal out, normally when they leak that quick it is usually the pump. the trans is 22 years old and may be due for a going through
	"the things you own will start to own you"

cml85 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: April-23-2007 Status: Offline Points: 5	Post Options Post Reply Quote cml85 Report Post Thanks(0) Quote Reply Posted: April-24-2007 at 8:26am
	thanks for the reply, I thought that the transmission might have to come out. is lifting the engine and the trans together the best way to get at it? If so, I think that the engine(351) has lifting hooks on it but i want to be sure before i lift it. they are rings on the cylinder heads one back left and one front right. is that what those are?

8122pbrainard Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040	Post Options Post Reply Quote 8122pbrainard Report Post Thanks(0) Quote Reply Posted: April-24-2007 at 9:13am
	cm, It was just mentioned in another thread about "the old bottle jack trick". Leave the front mounts in place but loosen the side to side adjustment so the engine can swivel. Put a bottle jack under each manifold at the rear. Disconnect the rear engine mount and start jacking until you have enough clearance to pull the trans. Oh, disconnect the exhaust hoses. One more thing, you then ship it to Eric.
	54 Atom 77 Tique 64 X55 Dunphy Keep it original, Pete <

eric lavine Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Grand Poobah Joined: August-13-2006 Location: United States Status: Offline Points: 13413	Post Options Post Reply Quote eric lavine Report Post Thanks(0) Quote Reply Posted: April-24-2007 at 9:14am
	you can loosen the front mounts and remove the rear mounts and swing the back end up high enough to clear the prop shaft, removing the engine is not necessary
	"the things you own will start to own you"

cml85 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: April-23-2007 Status: Offline Points: 5	Post Options Post Reply Quote cml85 Report Post Thanks(0) Quote Reply Posted: April-24-2007 at 2:43pm
	the exhaust manifold is strong enough to hold the engine? do I need to loosen or move the coupling on the shaft or will the trans clear with the coupling where it is? want to make sure I know what I am doing before I start.

TRBenj Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: June-29-2005 Location: NWCT Status: Online Points: 21131	Post Options Post Reply Quote TRBenj Report Post Thanks(0) Quote Reply Posted: April-24-2007 at 2:48pm
	Yup, the exhaust manifolds can support the motor. It shouldnt be too hard to slide the shaft a few inches to give you some room to get the tranny out.

cml85 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: April-23-2007 Status: Offline Points: 5	Post Options Post Reply Quote cml85 Report Post Thanks(0) Quote Reply Posted: April-27-2007 at 5:11pm
	took the transmission apart and found inside the pump some stuff that was dark gray and the consistancy of jello that filled the entire pump area. I dont think that is good, but could that be the reason for the leak?

eric lavine Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Grand Poobah Joined: August-13-2006 Location: United States Status: Offline Points: 13413	Post Options Post Reply Quote eric lavine Report Post Thanks(0) Quote Reply Posted: April-27-2007 at 7:54pm
	Is it leaking at the seal? these transmissions do eventually wear out and that is the point where yours may be at, it is a 1985 making it 22 years old.... not bad if its never been out of the boat. the grayish stuff you are seeing is years of contamination build up including fiber clutch material, I real would tear it completely down and go through it, either the manual can get you through it or you could call me for any questions you would have. if you need parts call me and Ill get you the correct plates to use... especially the reverses, the ones i use wont snap in half. tear it down further and inspect and post your questions Eric
	"the things you own will start to own you"

87BFN owner Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: August-25-2006 Location: Ypsilanti, MI Status: Offline Points: 2194	Post Options Post Reply Quote 87BFN owner Report Post Thanks(0) Quote Reply Posted: April-27-2007 at 8:15pm
	Pics go along way here. Plus we like to see what your doing. Helps spread the fun a little. Hope you have her back running soon, Eric is our resident trans expert.
	MY 87BFN

cml85 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: April-23-2007 Status: Offline Points: 5	Post Options Post Reply Quote cml85 Report Post Thanks(0) Quote Reply Posted: April-29-2007 at 1:55pm
	thanks everyone, I took apart the trans and everything else seems fine. I dont know what to look for, but all parts have been inspected and have no missing pieces or chicks and cracks, so I think everything good. what should I look for? I did find that the front seal had a damaged spot, so that might be where it was leaking from. I am going to order a seal kit from DIM and put it back together unless someone knows of something that I should check or replace. when repacing gaskets and seals do you need to also use a liquid sealer. if so what kind is best? thanks.

transmission leak

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