Created by: 
Posted:
Feb 23, 2017
01:40PM
Edited:
Feb 23, 2017
01:44PM
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MLM, I do not see contact info in your profile. Please send me a message at the email listed in my profile.
(lawsondk01-at-gmail-dot-com)
(lawsondk01-at-gmail-dot-com)
Doug L.
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Quote:
Originally Posted by Minimike1
ok, i guess I posted at the end of page 1 instead of on pg. 2.
Did this car ever run right?
I'm thinking carb needle is wrong.
Simple stuff.
think simple.
Did this car ever run right?
I'm thinking carb needle is wrong.
Simple stuff.
think simple.
I've tried different needles. can't remember which ones off the top of my head, but the original one i believe was pretty standard. I tried a very aggressive one. No change.
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ok, i guess I posted at the end of page 1 instead of on pg. 2.
Did this car ever run right?
I'm thinking carb needle is wrong.
Simple stuff.
think simple.
Did this car ever run right?
I'm thinking carb needle is wrong.
Simple stuff.
think simple.
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Total posts: 8382
Last post: Jan 13, 2022 Member since:Feb 7, 2006
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Quote:
Originally Posted by Morninglightmountain
Quote:
Originally Posted by malsal
MLM long shot here but is your Mini fitted with a catalytic converter ?
worth a try?
If in doubt, flat out. Colin Mc Rae MBE 1968-2007.
Give a car more power and it goes faster on the straights,
make a car lighter and it's faster everywhere. Colin Chapman.
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Last post: Jun 21, 2018 Member since:Oct 8, 2013
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Quote:
Originally Posted by Morninglightmountain
Quote:
Originally Posted by minimans
I really do hate to guess and theorize but the last few posts about springs and tachometers got me thinking. How accurate is the tach? Are we sure it's not over revving and floating the valves? This would explain all the symptoms would it not? If you just swapped in springs you have no idea what the spring pressures are?
Thanks guys. And i'm not fooling around here. I'm trying to tackle every suggestion. I have a full time job so I can get to everything immediately. I do appreciate all input.
Yes exhaust restriction will cause this effect but would not account for the engine noise..............
Mini's are like buses they come along in a bunch
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Quote:
Originally Posted by minimans
I really do hate to guess and theorize but the last few posts about springs and tachometers got me thinking. How accurate is the tach? Are we sure it's not over revving and floating the valves? This would explain all the symptoms would it not? If you just swapped in springs you have no idea what the spring pressures are?
Thanks guys. And i'm not fooling around here. I'm trying to tackle every suggestion. I have a full time job so I can get to everything immediately. I do appreciate all input.
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Total posts: 219
Last post: Apr 7, 2022 Member since:Aug 16, 2015
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Quote:
Originally Posted by malsal
MLM long shot here but is your Mini fitted with a catalytic converter ?
worth a try?
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Total posts: 8382
Last post: Jan 13, 2022 Member since:Feb 7, 2006
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MLM long shot here but is your Mini fitted with a catalytic converter ?
If in doubt, flat out. Colin Mc Rae MBE 1968-2007.
Give a car more power and it goes faster on the straights,
make a car lighter and it's faster everywhere. Colin Chapman.
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Total posts: 1404
Last post: Jun 21, 2018 Member since:Oct 8, 2013
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Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
I really do hate to guess and theorize but the last few posts about springs and tachometers got me thinking. How accurate is the tach? Are we sure it's not over revving and floating the valves? This would explain all the symptoms would it not? If you just swapped in springs you have no idea what the spring pressures are?
Mini's are like buses they come along in a bunch
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Total posts: 1188
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MLM, just a piece of advice, pls do follow their advices religiously, otherwise they will stop replying and will ignore you like you dont exist, and worst of all they'll slam you wherever thread you go, dont be like me, i've learned my lesson the hard way. Aaanyway wish you good luck in fixing your lovely 3,999.99 RPM mni
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Total posts: 219
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Quote:
Originally Posted by Dan Moffet
Quote:
Originally Posted by Morninglightmountain
Quote:
Originally Posted by dklawson
I am still concerned about the coil wiring. If that is a pink wire... and if the yellow wire is coming from the solenoid, there is every reason to believe that the Pertronix is running on low voltage which has been known to cause problems.
The tachometer may or may not highlight that problem. I was hoping it would be behaving erratically which would confirm a problem in the low tension circuit.
The tachometer may or may not highlight that problem. I was hoping it would be behaving erratically which would confirm a problem in the low tension circuit.
should be able to this weekend or early next week.
Thanks!!!
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Quote:
Originally Posted by Morninglightmountain
Quote:
Originally Posted by dklawson
I am still concerned about the coil wiring. If that is a pink wire... and if the yellow wire is coming from the solenoid, there is every reason to believe that the Pertronix is running on low voltage which has been known to cause problems.
The tachometer may or may not highlight that problem. I was hoping it would be behaving erratically which would confirm a problem in the low tension circuit.
The tachometer may or may not highlight that problem. I was hoping it would be behaving erratically which would confirm a problem in the low tension circuit.
should be able to this weekend or early next week.
Thanks!!!
.
"Hang on a minute lads....I've got a great idea."
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Total posts: 219
Last post: Apr 7, 2022 Member since:Aug 16, 2015
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Quote:
Originally Posted by malsal
Quote:
Originally Posted by malsal
If you read back into the abyss of the thread or maybe the other one he already has a cylinder head on hand to try.
MLM i don't think you answered this question did you replace any valves when you replaced the springs ? Did the car have the issue before you replaced the valve springs ?
MLM i don't think you answered this question did you replace any valves when you replaced the springs ? Did the car have the issue before you replaced the valve springs ?
The problem existed before the spring change and made no difference.
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Total posts: 8382
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Quote:
Originally Posted by malsal
If you read back into the abyss of the thread or maybe the other one he already has a cylinder head on hand to try.
MLM i don't think you answered this question did you replace any valves when you replaced the springs ? Did the car have the issue before you replaced the valve springs ?
MLM i don't think you answered this question did you replace any valves when you replaced the springs ? Did the car have the issue before you replaced the valve springs ?
If in doubt, flat out. Colin Mc Rae MBE 1968-2007.
Give a car more power and it goes faster on the straights,
make a car lighter and it's faster everywhere. Colin Chapman.
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Total posts: 219
Last post: Apr 7, 2022 Member since:Aug 16, 2015
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Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
Quote:
Originally Posted by dklawson
I am still concerned about the coil wiring. If that is a pink wire... and if the yellow wire is coming from the solenoid, there is every reason to believe that the Pertronix is running on low voltage which has been known to cause problems.
The tachometer may or may not highlight that problem. I was hoping it would be behaving erratically which would confirm a problem in the low tension circuit.
The tachometer may or may not highlight that problem. I was hoping it would be behaving erratically which would confirm a problem in the low tension circuit.
should be able to this weekend or early next week.
Thanks!!!
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Total posts: 9241
Last post: Aug 17, 2023 Member since:Jun 5, 2000
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Cars in Garage: 0
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I am still concerned about the coil wiring. If that is a pink wire... and if the yellow wire is coming from the solenoid, there is every reason to believe that the Pertronix is running on low voltage which has been known to cause problems.
The tachometer may or may not highlight that problem. I was hoping it would be behaving erratically which would confirm a problem in the low tension circuit.
The tachometer may or may not highlight that problem. I was hoping it would be behaving erratically which would confirm a problem in the low tension circuit.
Doug L.
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Total posts: 8382
Last post: Jan 13, 2022 Member since:Feb 7, 2006
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I already asked him about the tachometer on maybe the other thread Doug he said it was normal with no fluctuation.
If in doubt, flat out. Colin Mc Rae MBE 1968-2007.
Give a car more power and it goes faster on the straights,
make a car lighter and it's faster everywhere. Colin Chapman.
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Total posts: 9241
Last post: Aug 17, 2023 Member since:Jun 5, 2000
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MLM, I have just read through the 3 pages of this thread and watched your video.
The coil wiring shown in the video doesn't look right to me but it could just be the lighting. Please confirm the number of wires on each coil terminal and their colors. If the wires are not factory original, please state where each goes after leaving the coil.
The Pertronix should have two wires, red and black, with the red wire on coil (+) and the black wire on coil (-). It looks to me like you have a "pink" wire in addition to those and there is a yellow wire poking up from somewhere. Please confirm that.
Also, does your car have an electric tachometer? If so, how is its needle behaving when the problem starts?
The coil wiring shown in the video doesn't look right to me but it could just be the lighting. Please confirm the number of wires on each coil terminal and their colors. If the wires are not factory original, please state where each goes after leaving the coil.
The Pertronix should have two wires, red and black, with the red wire on coil (+) and the black wire on coil (-). It looks to me like you have a "pink" wire in addition to those and there is a yellow wire poking up from somewhere. Please confirm that.
Also, does your car have an electric tachometer? If so, how is its needle behaving when the problem starts?
Doug L.
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Total posts: 8382
Last post: Jan 13, 2022 Member since:Feb 7, 2006
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If you read back into the abyss of the thread or maybe the other one he already has a cylinder head on hand to try.
MLM i don't think you answered this question did you replace any valves when you replaced the springs ? Did the car have the issue before you replaced the valve springs ?
MLM i don't think you answered this question did you replace any valves when you replaced the springs ? Did the car have the issue before you replaced the valve springs ?
If in doubt, flat out. Colin Mc Rae MBE 1968-2007.
Give a car more power and it goes faster on the straights,
make a car lighter and it's faster everywhere. Colin Chapman.
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Total posts: 1649
Last post: Jun 22, 2022 Member since:Apr 30, 2009
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I suggest ,you need to swap a head.
Or have your's rebuilt ... New everything = will cost 500$+ but i would suggest trying to find a used one to try or borrow first.
Buy from host
//www.minimania.com/part/U-12G940LATE/12g940-Late-Model-Used-Cylinder-Head-For-1275cc
//www.ebay.com/itm/MG-MIDGET-SPRITE-1275-CYLINDER-HEAD-REBUILT-/272554305088?hash=item3f7580a640:g:UQ8AAOSwax5Yn~uw&vxp=mtr
//www.ebay.com/itm/MG-Midget-1275cc-Cylinder-Head-Assembly-MG1775-/222412434110?hash=item33c8d06abe:g
P4AAOSwx6pYple2&vxp=mtr
Or have your's rebuilt ... New everything = will cost 500$+ but i would suggest trying to find a used one to try or borrow first.
Buy from host
//www.minimania.com/part/U-12G940LATE/12g940-Late-Model-Used-Cylinder-Head-For-1275cc
//www.ebay.com/itm/MG-MIDGET-SPRITE-1275-CYLINDER-HEAD-REBUILT-/272554305088?hash=item3f7580a640:g:UQ8AAOSwax5Yn~uw&vxp=mtr
//www.ebay.com/itm/MG-Midget-1275cc-Cylinder-Head-Assembly-MG1775-/222412434110?hash=item33c8d06abe:g
P4AAOSwx6pYple2&vxp=mtr
