heating problem on startermotor SEAC

[cantus]

Gentleman,

My startermotor fails after a warm (hot) ride.
After 15 minutes cooling down startermotor works again.
But, when startermotor was brandnew (2008) startermotor ran very fast. Now when hot and cold startermotor runs slow. (Battery is new).
So I think the heat is damaging the startermotor and decreasing the rpm.

please advice.

thanks
William

[rev-erend]

Put some heat insulation on it

[cantus]

rev-erend said:

Put some heat insulation on it

How ?
A plate between exhaust and startermotor ?
Or wraparound heatingcloth around exhaust or around startermotor?

[Campbell]

Hi Cantus

If i were you i would wrap the starter and the solinoide too with some sort of heat reflective material.

Cant say ive had heat problems with the starter but mines always been slow..
What make model of battery are you running as im going to get a new one but the space is limited.

Cambelt

[rev-erend]

Heat wrap .. and make sure it's not metalic on the inside else it will short out .. big time

[combine]

My starter was doing the same thing ie slow turning when starting , got a new one and wrapped some heat shield stuff round it including wiring .

[adam quantrill]

If it's turning slowly the most likely problem is that the commutator/slip rings or brushes have tarnished in some way and there is a slightly higher resistance than usual. It won't need much resistance to significantly reduce the current and slow down the motor.

If you can keep the heat off it, it might recover as the tarnish gets worn away over many starts. Alternatively, open it up and clean off the contacts with wire wool to get back to bright copper.

I've certainly noticed the old one on my 350i was quite slow, and replacing it with a new landrover one it was twice as quick, presumably the old one had been cooked over the years....

[chedder]

Plumbers heat/soldering mats are cheap (£3) and just the right size, non metallic too.

[cantus]

Like this ?

[rev-erend]

That looks like it should do it

Has it made it cooler ?

[cantus]

rev-erend said:

That looks like it should do it

Has it made it cooler ?

Will try this weekend. First have to check the brakes.

[cantus]

The problem is solved. The insulation around the exhaust really works.
Startermotor turns around quickly when engine is hot.
Thanks all for your advice.

[adam quantrill]

Have you got stainless manifolds? If not, you'll get rot under the insulation.

[H2DCA]

adam quantrill said:

Have you got stainless manifolds? If not, you'll get rot under the insulation.

Yep you will if you leave it long term, just removed the insulation on my manifolds after two years and that is more than enough time before the rot starts setting in. Looks like the timing was right as they just needed a very good wire brush and a coat of paint. However the insulation did the trick with keeping under bonnet temp down and if the manifolds were a bit easier to come off I would probably insulate them again and remove every year to check for the rot. I will be putting a small amount on one manifold near the starter as it's a bit close for comfort or I may get one of these

http://www.agriemach.com/default.php?cPath=0_7_88

Edited by H2DCA on Thursday 9th July 14:56

[Waynester]

I've noticed as well a tendency for my starter to turn slow after a decent run - i assume it's the same issue as the OP?

The starter motor shield link is interesting, pic's is a bit small to see the detail though?

[CHJ]

You can get a high-torque starter motor. They are quite a bit smaller than the OE and so there's more clearance from the exhaust. Mine turns over the engine unbelieveably quickly and the battery drain is much less. About £80 for a new unit I think.

Chris

[grahamw48]

Waynester said:

I've noticed as well a tendency for my starter to turn slow after a decent run - i assume it's the same issue as the OP?

The starter motor shield link is interesting, pic's is a bit small to see the detail though?

25 quid for a bit of foil though...must be off the space shuttle...balls to that.

A sliced coke can will probably be just as effective.

[cantus]

adam quantrill said:

Have you got stainless manifolds? If not, you'll get rot under the insulation.

Yep , the're stainless , so no rot.