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Battery not charging, new alt, new batt. '82 Turbo - Page 2 - Engine/Ancilliaries - The Lotus Forums Jump to content
Rick

Battery not charging, new alt, new batt. '82 Turbo

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Rick, 

I have an '81 Turbo non AC which I'm currently removing the engine on. This is what mine looks like.

Steve.

20171012_092657.jpg

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The "red" engine is an HC engine from a later car. All HC had the high-mounted alternator, whether AC or not, with the triangular bracket.

LC turbo engines if non AC had the lower mounted alternator without triangular bracket, and with short adjusting strap but still have separate belts.

LC turbo with AC had similar arrangement to the HC engine, so the alt clears the AC pump. Separet belts again.

S2 may well have had one belt but no S3 or Turbo. I think Lotus went through the same learning curve as Ferrari with the 308, which also had one belt on early cars, but they eat water pump bearings as the tension needed on the alt is higher then needed on the wp.

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I have an 82 Turbo, and I can assure you that the water pump belt and the alternator drive belt are two seperate entities. The crank pulley has two grooves....one for each. If you've left off the waterpump belt, then that's why it's overheating...(!) It seems the "no charge" thing was down to a poor connection, then? Always the most likely problem... The alternator adjusting bracket is the same as in your upper photo above...the grooves in the pulleys for waterpump and alternator are not in line, so one belt won't fit both. Waterpump belt has no adjustment, sized to fit....which is fun when it comes to getting it off or putting it back,, there are several methods..(!)

The top photo above makes it clear...both belts show up nicely.


Scientists investigate that which already is; Engineers create that which has never been." - Albert Einstein

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39 minutes ago, Steve4012 said:

I have an '81 Turbo non AC which I'm currently removing the engine on. This is what mine looks like.

 

 

Yep, that's different to both the pics I posted.  Looks like I'm on two belts :(


BTW, that thick metal pipe that you've removed there over the top of the alternator, is that coolant?  I've not removed it as I didn't know what was in it and didn't want lose all my coolant taking it off, but it would be much easier to work around there with that out the way

 

36 minutes ago, Andyww said:

The "red" engine is an HC engine from a later car. All HC had the high-mounted alternator, whether AC or not, with the triangular bracket.

LC turbo engines if non AC had the lower mounted alternator without triangular bracket, and with short adjusting strap but still have separate belts.

LC turbo with AC had similar arrangement to the HC engine, so the alt clears the AC pump. Separet belts again.

S2 may well have had one belt but no S3 or Turbo. I think Lotus went through the same learning curve as Ferrari with the 308, which also had one belt on early cars, but they eat water pump bearings as the tension needed on the alt is higher then needed on the wp.

 

Yeah,  looks like I'm on two belts :(

 

27 minutes ago, molemot said:

I have an 82 Turbo, and I can assure you that the water pump belt and the alternator drive belt are two seperate entities. The crank pulley has two grooves....one for each. If you've left off the waterpump belt, then that's why it's overheating...(!) It seems the "no charge" thing was down to a poor connection, then? Always the most likely problem... The alternator adjusting bracket is the same as in your upper photo above...the grooves in the pulleys for waterpump and alternator are not in line, so one belt won't fit both. Waterpump belt has no adjustment, sized to fit....which is fun when it comes to getting it off or putting it back,, there are several methods..(!)

The top photo above makes it clear...both belts show up nicely.

Yep, that photo must be the same as mine.  So I'm on two separate belts.

I've not touch the water pump belt, so the over heating issue is probably nothing to do with that. 

Back to the drawing board it looks like.


'82 Turbo Esprit

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Possible source of over heating could be a known issue with this car.

The previous owner must have head my sobs from Spain and messaged me to say the fan relay in the bonnet some times came lose and that would cause it to over heat very quickly when the fan stopped working.  That'll be the first thing I check, everything crossed.

And I'll go back to all the basics you guys suggested rechecking over the alt and wiring.


'82 Turbo Esprit

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2 hours ago, Rick said:


BTW, that thick metal pipe that you've removed there over the top of the alternator, is that coolant?  I've not removed it as I didn't know what was in it and didn't want lose all my coolant taking it off, but it would be much easier to work around there with that out the way

Yes the large curved aluminium pipe is coolant.

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Shame, so it's going to go everywhere if I take that off without draining the system.


'82 Turbo Esprit

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Rick, have you thought about spending a couple of hours with someone who knows these cars?  It may save you a lot of grief and uncertainty.

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British Ambassador to Florida, New York, Denmark and Newfoundland.  And Sweden.

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I don't know anyone personally.

This did look like it should have just been a simple alt change (and might still turn out to be).

But, when I give up, I was thinking of giving Phoenix Motorsports (my closest specialist) a call and see if I can just trailer it up there with a stack of cash and get it back working.

I'm no particularly mechanically minded, and I'd not intended to get into this, when I bought the car I made sure I kept a stash of money to one side to let the pros do it all.  But this alt job just sucked me in :) 


'82 Turbo Esprit

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Nah mate, not even close, but thanks for the sentiment!  :lol:

Rick, you want to find someone who properly knows these motors, preferably an expert owner, for a good show and tell session.  Whereabouts are you?  Bet there's someone within reach...


British Ambassador to Florida, New York, Denmark and Newfoundland.  And Sweden.

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I'm in the north west, near Wigan.

I think a couple of guys are within 30-50 mins of me, and I've got Phoenix and PNM both 40-50 mins from me.  Can't start asking favours in my first week of being a forum member though.  I'll get along to some meets (I believe Norlog meet not a million miles from me) and make some friends and get them to give me a good look over their cars :)

I am learning a ton just from chatting to people on here so far.  That 3 different engines I can identify now :)


'82 Turbo Esprit

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Good on yer mate, crack on!  I'm sure any local owner would help, regardless of forum age...


British Ambassador to Florida, New York, Denmark and Newfoundland.  And Sweden.

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Cheers, if they're anything like other car communities then I'll be making some best friends who'll be more than happy to lend some expertise.

I want to at least make a token effort to help myself first and not just be that guy who gets everyone else to do everything ha ha.

I'm sure I'll get home, tighten a belt, push in a relay then spend the rest of my days on TLF posting nothing put driving stories and happy posts :D


'82 Turbo Esprit

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PNM has a very good reputation, I wouldn't hesitate to take my car in there, and there's not many I could say that about,

I hope you get sorted, and if not, get it trailered down to Watford!


Margate Exotics.

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31 minutes ago, ian29gte said:

PNM has a very good reputation, I wouldn't hesitate to take my car in there, and there's not many I could say that about,

I hope you get sorted, and if not, get it trailered down to Watford!

Cheers! Yeah I've not problem sticking out on a trailer to somewhere to get it right.

15 minutes ago, cbclotus said:

Keep at it Rick.    Mike

Will do!! Thanks.

 

As it happens, just investigated what's going on.

Looks like the alt belt has snapped and shredded the water pump belt with it, or visa versa.

Two new belts and we'll be laughing!

IMG_20171012_182742.jpg


'82 Turbo Esprit

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Good to hear you have found the problem!I was going to propose you to have a look to the radiator fan "otter" switch.

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Just got to find new belts now.

I assume they're pretty generic if I can find out which ones.

And then I need to know the trick to fitting the water pump belt :-\


'82 Turbo Esprit

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I am no expert .But maybe look at getting cam belt done .If it's not all ready been mentioned ....Mike

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9 hours ago, molemot said:

Waterpump belt has no adjustment, sized to fit....which is fun when it comes to getting it off or putting it back,, there are several methods..(!)

Looks like I'm going to need those methods.

Could your explain a couple please?

Just now, cbclotus said:

I am no expert .But maybe look at getting cam belt done .If it's not all ready been mentioned ....Mike

Yeah, as soon as the car is going I'm getting a professional to do that.

There's nothing in the paper work to say its been done recently.

It looks good, but I hear they need changing every two years anyway.


'82 Turbo Esprit

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Ideally do the waterpump belt by fitting crank pulley and waterpump pulley at the same time.   However, as a workable compromise undo the waterpump pulley and ease it back on to the hub with the belt in place.   Do not just attempt to lever or roll the belt onto the 2 pulleys!    

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spot on Rick  Hope you can get it fixed .it looks a great car .Mike

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19 minutes ago, 910Esprit said:

Ideally do the waterpump belt by fitting crank pulley and waterpump pulley at the same time.   However, as a workable compromise undo the waterpump pulley and ease it back on to the hub with the belt in place.   Do not just attempt to lever or roll the belt onto the 2 pulleys!    

Can this be done with the engine I place on my driveway? I can barely get my hand in there.

18 minutes ago, cbclotus said:

spot on Rick  Hope you can get it fixed .it looks a great car .Mike

Thanks, must be so close now!


'82 Turbo Esprit

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