free hit
counters
Red Clutch Hose Replacement - Gearchange/Gearbox/Clutch - The Lotus Forums Jump to content
jkorvette

Red Clutch Hose Replacement

Recommended Posts

Gents,

I am a new Esprit owner, wow what a vehicle! I experienced the grinding gears, can't get into reverse or first when the vehicle is hot, on my maiden voyage.

I purchased a braided hose from SJ Sportscars. You really get intimate with your Esprit routing this line! Anyhow the SJ fitting does not thread into my slave cylinder, seems the slave is threaded M12 x 1.0 and SJ's fitting is 3/8 unf. Has anyone run into this issue? I have a shop sourcing the required adapter/fitting but what a pain. Car is non functional and I'm chasing fittings for another week...

Share this post


Link to post
Share on other sites

Upgrade today to remove Google ads and support TLF.

Hi Jeff.

Have never seen a post on a project with the threads been wrong from SJ regarding this pipe.   Which end is the problem at ?  If its is under the bonnet end,hood end i.e the clutch master cylinder it that master cylinder may of been changed in the past, I know recently Barry on here fitted a landrover one and the thread was different.   But i may be completely wrong and the folks that supply SJ could of grimped a wrong end on when producing it, stranger things have happened.  

Hope the workshop finds an adaptor and you get her sorted soon.  

And welcome to the forums by the way !  :)


A

Share this post


Link to post
Share on other sites

Yup the thread was different on my slave. Never had a thread gauge so haven't fitted it as yet.

not being able to get reverse when hot is indeed a classic symptom - if you are finding it hard to find a thread adaptor - then you can always run a kunifer pipe and use the old nuts in the mean time.

hope you get it sorted chap


Only here once

Share this post


Link to post
Share on other sites

I'd give Steve at SJ Sportscars a call & explain the problem.

Part number SJ082J0035 which is for '92 models appear to come with adaptors. :thumbup:

SJ Hose.jpg

  • Like 1

Cheers,

John W

http://jonwatkins.co.uk

Share this post


Link to post
Share on other sites

JAE Parts in California USA supplies adapters with their clutch hoses now. If you ever find a non-fitting one on your car, they will send you the correct part at no charge. (Over the years, different master and slave cylinders may have been fitted, as silverfrost said).)

http://www.jaeparts.com/

 

  • Like 1

Atwell Haines

'88 Esprit

Succasunna, NJ USA

Share this post


Link to post
Share on other sites

When I installed a braided clutch hose on my 1990 Turbo SE, I needed either an adaptor to suit, or I had to drill and cut thread in the clutch master. I chose the later, as it's one link lesser, one seal lesser. Works perfectly as the new thread in the slave is bigger than it came with. I use the Landrover 2b I believe it's called, in aluminium as well. No problems what so ever since cutting the thread and installing.

Kind regards,

jacques

  • Like 2

Nobody does it better - than Lotus ;)

Share this post


Link to post
Share on other sites

I can't believe there are Esprits from 1989 that are still using the original red hose! I replaced mine within about 2 months of getting my car, after the first hot day where I couldn't use the clutch. One of the first upgrades I did!

  • Like 1

Share this post


Link to post
Share on other sites

About to do this with mine too so watching with interest. Hopefully you can post some progress shots for my benefit Jeff :)

Share this post


Link to post
Share on other sites

I have never had any problem with the red hose. My first Esprit (1981) I used to drive as a daily commuting car and never replaced the red hose and never had any problem with the clutch in the 8 years I owned it. So they dont all have a problem. The actual hose used is made by Girling so it is proper stuff. 

Share this post


Link to post
Share on other sites

Some people say its a myth,  But  regarding expansion when hot it is very  true  imo,   I think the folks that say it does not happen are just very lucky and maybe just had some red pipe fitted from the SPECIAL batch on the lotus production line :P    


A

Share this post


Link to post
Share on other sites

Its a myth. There I said it! My car had the original red hose and I ran it in long traffic jams at the height of Swedish summer, like 30 degrees. No crunching.

Only reason mine is gone is because I couldn't remove the end from the slave and had to clip it

Edited by Vanya

Vanya Stanisavljevic '91 Esprit SE | '91 Elan SE | '97 XK8

Share this post


Link to post
Share on other sites

I agree ts a myth - The hose travels on the cool side of the engine, so never gets anything like hot.   My 84 is on its original red hose with Zero issues.   If there had been any issues, why did lotus use it for the full production run? 

Edited by 910Esprit

Share this post


Link to post
Share on other sites

My first Esprit wouldn't change gear until it had 30 mins to cool down after a motorway run. Fixed with a braided SS hose. 


88 Esprit NA, 89 Esprit Turbo SE, Evora, Evora S, Evora IPS, Evora S IPS, Evora S IPS SR, Evora 400, Elise S1, Elise S1 111s, Evora GT410 Sport

Evora NA

For forum issues, please contact the Moderators

Share this post


Link to post
Share on other sites

My first Esprit also needed the red hose replaced. Never had problems with the braided one. And the one I got from SJ came with the necessary adapter.


I have made many mistakes in my life. Buying a multiple Lotus is not one of them.

 

Share this post


Link to post
Share on other sites

My first esprit showed all the classic red hose symptoms - replaced with a kunifer pipe and issue went away.

think that hose is a bit like the fish tank one that does the fuel tank breather 


Only here once

Share this post


Link to post
Share on other sites

I am about to replace the red hose on my 1986 S3 as it may be the cause of the  issue I am having when the car is hot. Reverse is sometimes awkward to engage. My question is which end of the stainless SJ hose goes where? Does the right angled connector fit at the master cylinder end or the slave cylinder end?

Thanks in advance.

Share this post


Link to post
Share on other sites

All these red hose replacements, was a bleed of the clutch tried first before deciding to blame the hose?

Share this post


Link to post
Share on other sites

I bought a SS hose when I first got my Esprit (24 years ago). I asked the local Lotus specialist about it and he said just to renew the fluid every other year and there would be no worries. No need to replace the red hose.

 

He was right.  No issues.

 

That SS hose is still stored inside my spare tire well today.... 

Edited by CarBuff
  • Like 2

Atwell Haines

'88 Esprit

Succasunna, NJ USA

Share this post


Link to post
Share on other sites

And, ironically enough, the fluid HAS to be changed in conjunction with the hose replacement... 

  • Like 2

Vanya Stanisavljevic '91 Esprit SE | '91 Elan SE | '97 XK8

Share this post


Link to post
Share on other sites

Yes, I did do a clutch bleed first. And refurbishes the gearlinkage front and rear.

However, I did not bleed the clutch after installing the braided hose. Simply connected it to the master first, routed it, then connected to the slave with fluid already dripping out. As I was alone I tried the pedal first before attempting to bleed it, felt good, did a testdrive to confirm and enjoyed the Esprit without any clutch problems whatsoever.

My experience on other cars, is that airbubbles in the clutchfluid are best noticeable after parking for some time, i.e. when cold, and the effect lessens when used and heating up. With the Esprit it was the exact opposite, it would start of fine but the longer it was used, the worse it got, especially when used spiritedly (and thus everything heating up more).

I do like the idea to let Mythbusters have a go! Could be quite easy: use a red hose to extend a hydraulic cylinder against a known force and measure the extension for a given input deplacement with different temperatures.


I have made many mistakes in my life. Buying a multiple Lotus is not one of them.

 

Share this post


Link to post
Share on other sites

Question: On LHD cars does the hose go down the hot side of the engine?

Share this post


Link to post
Share on other sites

I would not of thought so Andy as the slave cylinder remains on the right hand side of the transmission, so would be routed the standard way as on the rhd and just moves over around the front of the car by the master cylinder i would of thought ?


A

Share this post


Link to post
Share on other sites

If not for anything else, change it because by now, the red plastic hose will be quite old.

I changed it. No problems before, no problems after. As the cluth slave and -master leaks eventually, you'll have to change the fuid anyway.

I change the oil, coolant, brake og clutch fluid every year. Or oil every 5000, what ever comes first.

Kind regards,

Jacques


Nobody does it better - than Lotus ;)

Share this post


Link to post
Share on other sites

Apart from the question about whether its necessary, the SJ braided hose is not a very nice piece of engineering. I have fitted one, when I replaced my slave cylinder but both ends needed adaptors, and there is no U-bend on the end so the hose bends around a tight angle when it exits the master, and the stress is on the hose fitting. 

Also the fittings are screw-on instead of being crimped type so they dont retain the braiding. If I was doing this again I would be going to Think Automotive with the red hose and get a properly made hose made up which needs no adaptors and has the U-bend.

 

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • Create New...