Lotus Elan

Radiator go in/out separate from engine?

PostPost by: tdskip » Tue Oct 22, 2019 8:00 pm

I think it can but wanted to ask. Any specific order of assembly recommendations for putting an entire cooling / engine / brakes back into a S4?

Thanks!
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PostPost by: Fred Talmadge » Tue Oct 22, 2019 11:56 pm

The only car I know of that you don't have to replace the radiator separate of the engine is the air cooled VW and Porsche.
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PostPost by: billwill » Wed Oct 23, 2019 12:05 am

I doubt that you could get the engine in or out if you had not first drained and removed the radiator.
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PostPost by: SENC » Wed Oct 23, 2019 1:03 am

The radiator is one of the first things to come out in an engine out job, and one of the last to go in.

Having recently pulled and put my engine back in, here is the order I followed (and put it back in reverse). I removed and reinstalled engine and gearbox as a complete unit.

0 - Disconnect battery
1 - Drain radiator, sump, and gearbox, remove front swaybar while under car
2 - Remove airbox
3 - Remove vacuum tube from intake manifold
4 - Remove exhaust system from rear to downpipe
5 - Drain clutch hydraulics and remove slave cylinder
6 - Remove coil
7 - Disconnect coolant hoses from radiator, engine, heater, heater valve, and thermostat housing
8 - Remove radiator
9 - Remove water temp bulb from engine, tie off temp bulp coil safely out of the way to prevent damage
10 - Disconnect heater cable from water heater valve
11 - Disconnect fuel pipe from carbs
12 - Remove distributor cap and cables from spark plugs, note rotor position on distributor (with engine at TDC), remove distributor and blank hole with rag
13 - Remove starter
14 - Remove alternator
15 - Remove reverse light switch from top of gearbox (blind)
16 - Remove gearshift lever and turret inside car
17 - Support engine at sump with floorjack (use a board to spread load)
18 - Disconnect gearbox support from chassis (I had to remove support from the gearbox later as I couldn't get to the bolts while in position)
19 - Remove LH motor mount
20 - Remove exhaust manifold
21 - Replace LH motor mount (finger tight)
22 - Push crane into place and secure straps, take engine and gearbox under slight pressure
23 - Remove LH and RH motor mounts
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PostPost by: ecamiel » Wed Oct 23, 2019 12:07 pm

Some variations:
I leave the distributor in place but remove the cap.
I remove the clutch slave cylinder with the hose attached and tape it up out of the way. Saves bleeding on installation. Also, it is easier to do a good bleed holding the slave cylinder higher than the master cylinder.
I find it much easier to separate the engine from the gearbox and pull just the motor.
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PostPost by: arcangel » Wed Oct 23, 2019 12:42 pm

It was 20 plus years ago when I pulled that engine out but I'm pretty sure I removed the radiator first to give max room up front for the engine pull with gearbox in place. Make the radiator the last item to go back in after all of the engine bay work is done.
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PostPost by: tdskip » Wed Oct 23, 2019 3:55 pm

Thank you for the very helpful and detailed responses. Very much appreciated.
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PostPost by: tdskip » Wed Oct 23, 2019 3:58 pm

@SENC and others, Do the engine mounts go on after the engine is in roughly the right place or do I not them before the entrance on the lift?

In other words - do I install the engine mounts onto the block prior to slotting the engine back into the open engine bay?
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PostPost by: SENC » Wed Oct 23, 2019 5:02 pm

I put mine on the engine before, but only finger tight (particularly on the LH side as that mount will need to come back off to mount the exhaust manifold).
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PostPost by: tdskip » Wed Oct 23, 2019 5:11 pm

Thank you.

Gosh you gentlemen are helpful!
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PostPost by: Frogelan » Thu Oct 24, 2019 2:26 pm

I was amused by the question from California and will add the following sequence from the Spa 6 hour meeting for your amusement...[with thanks to Raceworks...who changed a clutch in less than an hour...in the middle of the race]:

p1000726.jpg and
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PostPost by: Frogelan » Thu Oct 24, 2019 2:27 pm

Engine and radiator going in...
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p1000729.jpg and
1965 Lotus Elan S2 26/4022 (originally Dutchess Lotus East, PA and NJ Area, USA)
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PostPost by: Frogelan » Thu Oct 24, 2019 2:29 pm

And it worked...NB gearbox already in the car:
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p1000731.jpg and
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PostPost by: tdskip » Thu Oct 24, 2019 2:55 pm

Happy to be of amusement
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PostPost by: Frogelan » Thu Oct 24, 2019 2:59 pm

So the record to beat is just under an hour. You are allowed helpers!
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