Supercharger Rebuild advice - LotusTalk - The Lotus Cars Community
 1Likes
  • 1 Post By +TSRAGR
 
LinkBack Thread Tools Display Modes
post #1 of 10 (permalink) Old 02-09-2019, 01:29 PM Thread Starter
Registered User
 
Join Date: Nov 2015
Location: massachusetts
Posts: 1,976
Supercharger Rebuild advice

So it is out, and I have a kit, but there are a bunch more bearings in the thing other than the snout.
Is there any reason to think more on that?

Any other things to look at in the MP62 while it is out?
exigegus is offline  
Sponsored Links
Advertisement
 
post #2 of 10 (permalink) Old 02-09-2019, 02:34 PM
Registered User
 
Motard's Avatar
 
Join Date: Feb 2010
Location: Knoxville, Tennessee
Posts: 1,392
Garage
Yes,

Actually, you should crack the thing open in 3 pieces. Rotors, Case, Snout. Use the red jel like anerobic sealant to re seal it all together again. ( very common and found at all auto stores)

You can check coupler in snout. See if any of the pin openings have rounded out and that it still fits snug. If not replace

In the back of the case are needle bearings. They take a special lube. You can add some, but be warned against too much. I had to take my SC apart again and saw that the blue lube was on the lobes. so I added to much.


I went further... I sanded down all the casting on the intake to be as smooth as the chamber, I also enlarged the outlet a little. If you have any inclination to do this, look through my SC posts years ago and it has links to help explain what is possible with "porting" a MP62.

I also swap out my SC oil every 10k miles. I have a 2.9" pulley and it is def brown color when coming out. There are threads about how much oil to put back in. In essence the bottle has the exact amount. If you have any questions feel free to pm. Peacb


Also since you have it all out, I would put a phenoylic ( spelled wrong) gasket between the intake manifold and head. Just one more barrier for heat to help cool down intake air.

L O T U S
Motard is offline  
post #3 of 10 (permalink) Old 02-09-2019, 07:43 PM
Sold my Exige S
 
+TSRAGR's Avatar
 
Join Date: Aug 2011
Location: TX Coast
Posts: 930
I pulled my supercharger two years ago at 20k miles just for a routine wear inspection. The only problem I encountered was a thin film of oil stuck to the rotors, casing, and inside the swan neck - all of it was blow-by from not using an oil catch can during the car's first few years. I drained around 110mL of oil from the snout and replaced with the exact amount. @exigegus Were your SC issues caused by adding too much oil last time and compromising the seals?

Motard, good points all around, but changing it every 10k miles does sound overkill for street use.

Here are the needle bearings that should be cleaned and lubed.
Attached Images
 
+TSRAGR is offline  
 
post #4 of 10 (permalink) Old 02-09-2019, 07:58 PM
The Enforcer
 
oldmansan's Avatar
 
Join Date: Mar 2011
Location: Los Alamitos, CA
Posts: 6,096
Quote:
Originally Posted by +TSRAGR View Post

Motard, good points all around, but changing it every 10k miles does sound overkill for street use.
I was thinking the same thing, but Motard has previously mentioned he has a disease which compells him to do such things.

About how long is it taking you guys to pull, service and replace the supercharger?

San

#8 Metric Allen Key, Plastic Carpet Buttons
oldmansan is online now  
post #5 of 10 (permalink) Old 02-10-2019, 03:16 AM Thread Starter
Registered User
 
Join Date: Nov 2015
Location: massachusetts
Posts: 1,976
When I changed the oil last year, there was not enough coming out by about a third. I also have an odd trailing throttle rattle, which made me want to investigate the things I can. The car has 55k miles, and I suspect it was tracked before my ownership.

On opening the snout I find little wrong, I have a kit, so I will rebuild the snout.

Do we know what the grease is that goes on the needles?
exigegus is offline  
post #6 of 10 (permalink) Old 02-10-2019, 05:48 AM
Registered User
 
kfennell's Avatar
 
Join Date: Jun 2015
Posts: 1,932
I would consider the rest of the Sc to be unserviceable and either leave it or send it off to a pro. I used the high speed lab.

2007 Exige S with almost every track mod...
kfennell is offline  
post #7 of 10 (permalink) Old 02-11-2019, 12:31 AM
Sold my Exige S
 
+TSRAGR's Avatar
 
Join Date: Aug 2011
Location: TX Coast
Posts: 930
Quote:
Originally Posted by oldmansan View Post
About how long is it taking you guys to pull, service and replace the supercharger?
I did mine with the rear clam on and the hatch removed. It was still probably a good 3 hours for all the work, servicing the supercharger, and re-installation. The middle nut on the intake manifold was a mean dude.
Attached Images
 
oldmansan likes this.
+TSRAGR is offline  
post #8 of 10 (permalink) Old 02-11-2019, 06:31 AM Thread Starter
Registered User
 
Join Date: Nov 2015
Location: massachusetts
Posts: 1,976
Well, I am not so quick, but my work was spread out while I did other things

Most of the time is spent finding the correct wrench or socket to fit in a spot.

So, judging by the amount of oil left in, I would not take mine apart again. Since it was at least 30 percent low at 46k miles, I did not know if it lost that amount in 46k miles or the previous 1k miles.

It was 46k miles.

But now I know.


The seal surface is grooved.

It does not look like the shafts are commonly available in a quick search, so I may just clean it up a little and not worry about it.

Has anyone else seen this, addressed it, ignored it?
exigegus is offline  
post #9 of 10 (permalink) Old 02-11-2019, 08:51 AM
He's on fire!
 
jds62f's Avatar
 
Join Date: Jun 2006
Posts: 3,046
I am not so quick either it seems and I don't have an hours estimate for similar reasons. Stuff already mentioned, and stuff I thought would be easy, like the nut on the end of the snout.

If I would have been smart I would have seen if I could get it loose with the belt still on. I had things more apart, so instead I needed a strap wrench... the first one I bought couldn't keep the wheel from slipping, it wasn't until I took a look at some craftsman ones, where the strap was a nice rubber (and therefor grippy) that I found the right tool for the job. I probably spent 2 hours of time just finding a competent strap wrench (when you factor in trying and failing, drive times to more than one hardware store, etc).

Un/Install of the SC was this many times over
1. Looks like I should be able to get at that bolt/nut
2. Access issues make it more difficult than I thought at first
3. Go buy another tool and try it (repeat this step until success)
4. Move on from a task I thought would take a few minutes an hour or two later

I don't have a ton of miles on my car (20k), it is garage kept and well washed... I can't imagine what it would have been like if I'd faced any rust.

"Give a man a match, and he'll be warm for a minute, but set him on fire, and he'll be warm for the rest of his life."
jds62f is offline  
post #10 of 10 (permalink) Old 02-11-2019, 10:44 AM Thread Starter
Registered User
 
Join Date: Nov 2015
Location: massachusetts
Posts: 1,976
Funny, I actually thought to remove the pulley nut first

AS it turns out, the seal surface is fine, it just had a buildup of goo that made it look like a groove, so a little scotchbrite and off we go.
exigegus is offline  
Sponsored Links
Advertisement
 
Reply

  LotusTalk - The Lotus Cars Community > Lotus Discussions > Lotus Exige

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the LotusTalk - The Lotus Cars Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Correct snout rebuild kit for supercharger exigegus Lotus Exige 4 02-26-2018 01:17 AM
WTB Exige Supercharger or Supercharger system Monkeywrench Parts Wanted 0 09-13-2012 09:04 AM
Supercharger rebuild ... thebuzzard Lotus Exige 0 05-02-2011 02:49 PM
Going Forward with the Lotus Supercharger Kit - Need Advice vincesf Forced Induction 9 10-14-2009 06:08 AM
Transmission Rebuild: Parts/Advice ??? Evil Twin Powertrain (Engine, Transmission, etc) 19 09-02-2008 12:05 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome