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Oil stat?


63 replies to this topic

#1 Rich H

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Posted 25 August 2010 - 05:04 PM

Is there an oil stat in the system or does the oil always go through the oil coolers?

Ta
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#2 Vince

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Posted 25 August 2010 - 06:03 PM

Nope there isn't any. Aftermarket ones exist though.

#3 Rich H

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Posted 25 August 2010 - 06:07 PM

Does that not seem odd?
An oil stat will get the oil up to temp much quicker...

Anyone got one fitted?
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#4 Vince

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Posted 25 August 2010 - 06:18 PM

Well yes and no. It's a sports car and as such drivers are supposed to treat the engine well and let it warm um properly. Therefore a thermostat is useless and would only add weight and cost which is contrary to otus's DNA so to spoeak ;)

However people who use it more like a daily runner on short trips, may think otherwise. I know a of an SE which had one fitted because of this. The owner lived in a cold area in northern Germany, used it to go to work and was upset that a significant part of the journey was spent warming up the oil, so he pretty much could never put his foot down, which he he found frustrating . So he put a thermostat and he said it considerably quickened warm-up of the oil. So apparently it's worth it for short trips.

Edited by troutrou, 25 August 2010 - 06:23 PM.


#5 Rich H

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Posted 25 August 2010 - 06:21 PM

Sounds like nothing to loose if I can loose a couple of kg! :sorcerer:

I'll have a look! Cheers!

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#6 Vulcan Grey

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Posted 25 August 2010 - 08:04 PM

I just put one in 2000 miles ago during my engine rebuild.

I bought a MOCAL MOCTB3
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The reason that I put it in is because I do tend to drive in cold weather, and the car takes forever to heat up. The oil-thermostat opens at 82C (optimum operating temp for the Esprit), and does seem to get up to temp sooner now.
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#7 Rich H

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Posted 25 August 2010 - 08:31 PM

Nice one - I'll add it to the list!

Found one at Burton Power for £40 :detective:

https://www.burtonpo...p=07004&PSet=98
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#8 Vulcan Grey

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Posted 25 August 2010 - 08:37 PM

I had a talk with Nick Adams at the Lotus Gathering in 2007 in Aspen CO. We talked about the 2-Eleven, and how they have the oil-stat and acusump. He thought in my situation that it was a good idea to have the oil-stat.
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#9 Rich H

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Posted 25 August 2010 - 08:56 PM

I don't see a down side.
It warms the engine up faster but retains the oil cooling capability on demand.
Also prevents over-cooling of the oil if it's a particularly cold day.

Am I right in thinking from your pics that the oil cooler sandwich plate isn't actually bolted on at all but held by the oil filter?

Rich

Edited by Rich H, 25 August 2010 - 08:57 PM.

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#10 Vulcan Grey

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Posted 25 August 2010 - 09:00 PM

correct, the original Lotus oil cooler sandwich plate is not bolted on, it is held on by the oil filter.

The MOCAL MOCTB3 is bolted on by the gold colored adapter, which fits the Esprit perfectly, once that bronze adapter is removed.
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#11 Rich H

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Posted 25 August 2010 - 09:27 PM

Top banana - cheers!

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#12 Advantage

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Posted 25 August 2010 - 09:43 PM

Fit a Kenlowe Hotstart instead. That way you're never starting a cold engine.

#13 Rich H

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Posted 25 August 2010 - 09:53 PM

Ideally don't want to be plugging in 240V outside, 12v for the battery maintainer only.
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#14 sailorbob

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Posted 26 August 2010 - 03:58 PM

Travis posted the correct Mocal part number but I found that the hose adapters needed drilling out because their bore was considerably smaller than the OE adapters.

#15 Rich H

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Posted 26 August 2010 - 05:38 PM

OK I can cope with that. I'll get one ordered while I'm still sorting things out.

Cheers!

Ordered - I'll drop the adapter things in the lathe and open the up a bit.
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#16 Simon350S

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Posted 26 August 2010 - 06:31 PM

The earlier S3 Turbos had an inline stat on the chassis. Lotus obviously decided to move away from it for some reason?

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#17 Rich H

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Posted 15 September 2010 - 08:46 PM

Fitted today - removing the couplings was a pain the top one was stuck hard. The rest were fine and the central extension piece was finger tight!

Word of note though the connections on the mocal plate are the opposite way around to get the same flow through the filter otherwise no issues fitting it at all.

I'll report back ont he efect it has once I'm back up and running- water pump to fit once it comes back fromt he rebuild and a clutch MC to rebuild - again :thumbdown:
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#18 sailorbob

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Posted 23 September 2010 - 02:26 PM

Word of note though the connections on the mocal plate are the opposite way around to get the same flow through the filter otherwise no issues fitting it at all.

On the S4/S4S/GT3 it doesn't matter which way the oil flows through the coolers.

#19 MrDangerUS

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Posted 23 September 2010 - 03:20 PM

I'd like to add oil pressure and temp senders at the same time. Is there a room to add a sandwich plate?


Edited by MrDangerUS, 23 September 2010 - 04:08 PM.


#20 Rich H

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Posted 23 September 2010 - 05:57 PM

??? I have them as standard on my S4....

Might be but it'd be tight unless you can fit them in one unit.
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