Weird noise latest

[Mad4slalom]

Hi All, been quiet on here as been to wet and cold to pull the starter on the 72. Do off tomorrow and dry so my plan is get it out and grt on with it as I had been burying my head a bit really. Thought I would fire it up today and noticed something that I hadnt noticed before and cant get my head around. Hoping you guys may have an explanation. I usually wind over the motor a few times before pumping the throttle to build oil pressure prior to starting. I noticed today that the scraping noise is only there once the motor fires up and NOT when the motor is just turning over. It is definately scraping on the inside of the inspection plate tho, even more baffled now , will hopefully see more tomorrow . Any thoughts ?

 

[Roscobbc]

When starter motor is turning engine over - is it pushing flywheel or flex plate rearwards (and out of contact with whatever is scraping. I have experienced issues with contact between flywheel/ring gear/inspection cover etc etc. Are there any 'polished' high spots you can see?

 

[Mad4slalom]

When starter motor is turning engine over - is it pushing flywheel or flex plate rearwards (and out of contact with whatever is scraping. I have experienced issues with contact between flywheel/ring gear/inspection cover etc etc. Are there any 'polished' high spots you can see?

AhWill know more tomoz thank you

 

[Oneball]

If it’s not there when you’re turning it over on the starter but makes the noise when running. I reckon the starter motor pinion is catching on the flywheel

 

[Roscobbc]

Stock type starter - or mini-starter?

 

[Mad4slalom]

If it’s not there when you’re turning it over on the starter but makes the noise when running. I reckon the starter motor pinion is catching on the flywheel

Will hopefullybfind out tomorrow

 

[Chuffer]

Stock type starter - or mini-starter?

I was about to ask the same thing as thinking if it is a newly fitted mini starter he might not have it aligned correctly . Thankfully I got it right first time when I fitted one .

 

[Mad4slalom]

I was about to ask the same thing as thinking if it is a newly fitted mini starter he might not have it aligned correctly . Thankfully I got it right first time when I fitted one .

How do i tell the difference

 

[Roscobbc]

Standard starter is a big, heavy bit of kit. Mini-starter isn't?

 

[Mad4slalom]

Standard starter is a big, heavy bit of kit. Mini-starter isn't?

I think i have the big one then

 

[Mad4slalom]

Will hopefullybfind out tomorrow

Starter out and looks to be the ring gear chewing it up. Should I just nibble the offending bit of tin away to give clearance.?
am going out to see if there is any movement in the flywheel while its out. Any thoughts or suggestions welcome,Thank you all for your help

 

[Mad4slalom]

Oops no picture

 

[Mad4slalom]

Oops no picture

Think it is the crank counter weight too , how much do i trim, , the sump tabs dont locate one side so it can flex in ward at top going to have a tweaking session .

 

[Chuffer]

Starter out and looks to be the ring gear chewing it up. Should I just nibble the offending bit of tin away to give clearance.?
am going out to see if there is any movement in the flywheel while its out. Any thoughts or suggestions welcome,Thank you all for your help

My guess is you would experience serious vibrations with engine running if the flywheel was loose ( not Good Vibrations , surfer dude ) . Hope you finally crack this ongoing niggle .

 

[Mad4slalom]

I trimmed around the gnarled up bit in the picture and bent the tabs so they located on the sump lip. Refitted plate and starter motor . Fired up to less noise but still touching. Removed plate bolts and flexd it out then put a screwdriver up and eased out the top near the sump to give a bit more clearance. Thought I would try this before pulling starter motor. Much less noise now but still faintly scraping. Went for a test up the road, got less than 500 yards when an almighty clank clank rattle tinkle much worse than the original one . I pulled over, no pnone had a look around and under expecting to see bits of plate or a spanner or something. Nothing, quite busy traffic so i thought only thing i could do was drive back home , within 3/400 yards i noticed it completely quiet , i can push the plate in and make it touch but for now it is running quiet with no scrape. Can only think it caught the plate again and clanked a few times before breaking off the mangled bit.
I couldnt get any movement from the flywheel or harmonic balancer with a pry bar. I will test over weekend to see if i can get a bit of confidence back in it. Guess I will pull the starter and plate again to seewhat got mangled this time. Any point ordering a new plate, run without one or keep trimming this one. They obviously run very close to flywheel , too close. And further thoughts or suggestions appreciated. Thanks all.

 

[Chuffer]

Clank clank bang tinkle , must have been scary I would defo get the car in the air and have the starter off to see what was going on in the innerds . If you are still running the original oil drum size starter motor I would recommend swapping it for a mini starter while you are at it . They are brilliant . Much smaller , lighter , more efficient at spinning the engine over and with more air space around them they are far less prone to heat soak and all the problems that causes .

 

[Oneball]

If it’s not making a noise now I’d leave it alone

 

[Mad4slalom]

Clank clank bang tinkle , must have been scary I would defo get the car in the air and have the starter off to see what was going on in the innerds . If you are still running the original oil drum size starter motor I would recommend swapping it for a mini starter while you are at it . They are brilliant . Much smaller , lighter , more efficient at spinning the engine over and with more air space around them they are far less prone to heat soak and all the problems that causes .

I can see why folk fit a small starter, that one was a lump to re fit trying to align bolts and shim, must be costing me a few bhp and extra fuel costs . Anyone running with no plate? Anyone replaced the plate, the new ones look identical so would I have the same problem. ?

 

[Oneball]

The new one I got looks just like yours

 

[Mad4slalom]

If it’s not making a noise now I’d leave it alone

half of me says leave it but the other half says take it all out again to see wtf made all that noise