Outer Limits 4x4 Board

I have a small bosh starter from a late model falcon currently starting my 351, the starter does a great job but Ii am replacing the solinoid around every 6 months. After 5 months of use i just get nothing when turning the key, no click just nothing, I try a few times then it turns over and starts as if there was no problem. This happens for a week or two then it can only be started using a screwdriver on the terminals.
I have changed 3 now, 1st brand new, 2nd 6 months old, 3rd who knows from wrecker, all only last 6 months or so each.
Any thoughts appreciated,
I have changed the cable to a softer more flexible one thinking that the old one may have been stressing the treminals but no luck so far

heat from the extractors killing them, might need a heat shield

its aford not a nissan wrote:heat from the extractors killing them, might need a heat shield

x 2

Are they v8 ones or modified 6cyl ones?


Get a Castle Auto Electrics one

It has std manifolds so they are quite high, also the solinoid is rotated so its the lowest part so should get lots of fresh air. when i pull apart there seems to be nothing wrong with any part either the motor or the solinoid. I change the solinoid and its all good for another 6 months.

It is a std 6cly one, and fits straight in just using a spacer.

how are the castle auto ones different

Are you using a relay to switch the solenoid,if not you may be getting voltage drop through the start circuit.
If you can still start it by bridging the start terminal and the b+ stud there is nothing wrong the solenoid,When it plays up check the voltage at the switch terminal and it should be more than 10V ish.

When it does fail and I use a screwdriver to start I either get the passenger to turn the key as the solinoid will plunge out then I bridge the main battery lead to the motor power terminal. if alone then I need to bridge all three which requires 2 screwdrivers

I brought a little high torque starter off ebay for $125,has been in there for 9 months and never missed a beat .Bargain.

I am using the little high torque ones not the old style