Broken Starter flange
24 posts
• Page 1 of 2 • 1, 2
Hi,
I have a +2 130/5 that I am renovating. I have a problem in that I have had two starter motor mounting flanges break across the bolt holes. The engine is a 1700 711M block with L14 cams, bigger valves and gas flowed head.
It appears that when starting the engine it gives a bit of a cough/backfire before the float chambers are full, but this breaks the flange. Has anyone had a similar problem, and if so is there a fix. I am thinking the starter must flex with the torque which breaks the aluminium flange. I am thinking of welding a bracket onto the starter casing and finding some way to bolt this to the block to stop any movement.
Any advice would be appreciated,
Thanks,
Mick.
I have a +2 130/5 that I am renovating. I have a problem in that I have had two starter motor mounting flanges break across the bolt holes. The engine is a 1700 711M block with L14 cams, bigger valves and gas flowed head.
It appears that when starting the engine it gives a bit of a cough/backfire before the float chambers are full, but this breaks the flange. Has anyone had a similar problem, and if so is there a fix. I am thinking the starter must flex with the torque which breaks the aluminium flange. I am thinking of welding a bracket onto the starter casing and finding some way to bolt this to the block to stop any movement.
Any advice would be appreciated,
Thanks,
Mick.
- Mick6186
- Second Gear
- Posts: 223
- Joined: 11 Mar 2014
Check/adjust your ignition timing....?
John
John
-
john.p.clegg - Coveted Fifth Gear
- Posts: 5744
- Joined: 21 Sep 2003
If the timing is correct for max power and torque but only has the starting problem then fit a latching relay with a push button (preferably hidden) to switch in the ignition once the engine is cranking healthily.
You will get faster cranking, better starting and an extra security device.
Your engine is trying to kick back, I had a highly tuned X/flow that would do it so violently that it would run backwards for a few r?volutions a few times snapping the head off a cam follower, the pi?ces of d?bris then wrecking the dry sump pump.
You will get faster cranking, better starting and an extra security device.
Your engine is trying to kick back, I had a highly tuned X/flow that would do it so violently that it would run backwards for a few r?volutions a few times snapping the head off a cam follower, the pi?ces of d?bris then wrecking the dry sump pump.
- Chancer
- Coveted Fifth Gear
- Posts: 1370
- Joined: 20 Mar 2012
"If the timing is correct for max power and torque but only has the starting problem then "
.... get inside your dissy and enlarge the advance range so your cranking timing is less aggressive.
John
.... get inside your dissy and enlarge the advance range so your cranking timing is less aggressive.
John
-
john.p.clegg - Coveted Fifth Gear
- Posts: 5744
- Joined: 21 Sep 2003
I'm fairly sure the ring gear/starter pinion are matched as the engine turns over fine with no spark connected and had been starting no problem. This happened after I fitted an original fuel pump and it seemed that the fuel hadn't filled the carbs before it backfired. I'm keen on the too much advance theory so will retard it slightly when my new starter flange arrives.
Thanks for the comments,
Mick
Thanks for the comments,
Mick
- Mick6186
- Second Gear
- Posts: 223
- Joined: 11 Mar 2014
Mick6186 wrote:I'm keen on the too much advance theory so will retard it slightly when my new starter flange arrives...
Can you buy starter motor flanges? Could you tell me where?
Cheers
Robbie
-
Robbie693 - Coveted Fifth Gear
- Posts: 1637
- Joined: 08 Oct 2003
jcr supplies have the flanges and most parts to rebuild the starter motors.
inertia starters use a 110 tooth ring gear there are 2 types of ring depending on the age, only the bore is different the tooth form is the same. these ring gear were used on all kent based engines. There are 3 available pinions to suit the ring gear 9,10 and 11 tooth. the standard pinion for a ford escort 1.1/1.3/1.6 is 10 tooth but cold climate spec has a 9 tooth pinon and is a straight swap.
iain
inertia starters use a 110 tooth ring gear there are 2 types of ring depending on the age, only the bore is different the tooth form is the same. these ring gear were used on all kent based engines. There are 3 available pinions to suit the ring gear 9,10 and 11 tooth. the standard pinion for a ford escort 1.1/1.3/1.6 is 10 tooth but cold climate spec has a 9 tooth pinon and is a straight swap.
iain
- ort
- First Gear
- Posts: 44
- Joined: 18 Jun 2012
Robbie693 wrote:Mick6186 wrote:I'm keen on the too much advance theory so will retard it slightly when my new starter flange arrives...
Can you buy starter motor flanges? Could you tell me where?
Cheers
Robbie
If you are talking about the mounting flange for the original Lucas M35J starter, I purchased one from this seller on eBay: http://www.ebay.com/itm/LUCAS-M35J-INER ... Sw9N1VtgVu
Dan
'66 Elan S2
'05 Lotus Elise
'96 Ferrari F355 GTS
'05 Lotus Elise
'96 Ferrari F355 GTS
- tesprit
- Second Gear
- Posts: 71
- Joined: 13 Sep 2007
jcr supplies have the flanges and most parts to rebuild the starter motors.
inertia starters use a 110 tooth ring gear there are 2 types of ring depending on the age,
>>>>>>>>>>>>>>>
there is only one ring gear for twin cams, 110 tooth
ten tooth starters found there way into the aftermarket, not original, but seem to work fine
Fine tooth ring gears were not on Lotus twin cams, maybe Caterham
All the flanges should be the same regardless of pinion, although some starters in the aftermarket may not have interchangeable parts
inertia starters use a 110 tooth ring gear there are 2 types of ring depending on the age,
>>>>>>>>>>>>>>>
there is only one ring gear for twin cams, 110 tooth
ten tooth starters found there way into the aftermarket, not original, but seem to work fine
Fine tooth ring gears were not on Lotus twin cams, maybe Caterham
All the flanges should be the same regardless of pinion, although some starters in the aftermarket may not have interchangeable parts
- gus
- Fourth Gear
- Posts: 721
- Joined: 05 May 2011
I do not believe there was a change in 1970. There was a change to the flywheel[4 bolt to six bolt] before that
10 tooth pinions work but are AFAIK not an original fitment, and the presence or or absence of a 10 tooth pinion says nothing about the ring gear.
10 tooth pinions work but are AFAIK not an original fitment, and the presence or or absence of a 10 tooth pinion says nothing about the ring gear.
- gus
- Fourth Gear
- Posts: 721
- Joined: 05 May 2011
are you sure the sandwich plate between bellhousing and engine is not damaged. You need to be sure the machined shoulder on the starter motor flange is locating fully, if not when the starter motor holding screws are tightened the flange will be destorted/bent
Alan
Alan
Alan.b Brittany 1972 elan sprint fhc Lagoon Blue 0460E
- alan.barker
- Coveted Fifth Gear
- Posts: 3681
- Joined: 06 Dec 2008
Alan,
Now you've got me thinking. It's a 5 speed with a 711M block and I think the sandwich plate has been cut in places to fit and if I remember correctly the piece for the starter is missing so I think the starter flange only locates on the gearbox, therefore leaving one side with no support. This would not be good !! I will investigate and may have to fabricate a support ring from some sheet steel.
Thanks,
Mick
Now you've got me thinking. It's a 5 speed with a 711M block and I think the sandwich plate has been cut in places to fit and if I remember correctly the piece for the starter is missing so I think the starter flange only locates on the gearbox, therefore leaving one side with no support. This would not be good !! I will investigate and may have to fabricate a support ring from some sheet steel.
Thanks,
Mick
- Mick6186
- Second Gear
- Posts: 223
- Joined: 11 Mar 2014
" starter flange only locates on the gearbox, therefore leaving one side with no support."
surely you mean the bell-housing?
Even so I still can't picture it...
John
surely you mean the bell-housing?
Even so I still can't picture it...
John
-
john.p.clegg - Coveted Fifth Gear
- Posts: 5744
- Joined: 21 Sep 2003
24 posts
• Page 1 of 2 • 1, 2
Total Online:
Users browsing this forum: No registered users and 24 guests