Crank vent Blockoff: What on earth is THAT hose? - LotusTalk - The Lotus Cars Community
 1Likes
  • 1 Post By RichardNHCooper
 
LinkBack Thread Tools Display Modes
post #1 of 8 (permalink) Old 07-18-2017, 04:43 PM Thread Starter
Registered User
 
fsparv's Avatar
 
Join Date: Feb 2009
Location: Boston Area
Posts: 656
Garage
Crank vent Blockoff: What on earth is THAT hose?

Ok so I've ordered my self a catch can from BOE, and some stuff I read seemed to indicate that once you have the catch can, you can do the vent hose delete without the risk of dipstick blowouts. So I ordered that kit too, and tonight I was investigating how hard this would be to do, and it's quickly becoming apparent that the bottom half of the crank vent hose is ridiculously hard to get to. In the process of investigation, I discovered that despite the lack of apertures in the block in that area there seems to be a metric but load of rubber hose, including a very suspiciously wasteful loop(!!) involving a hardline u-bend. The hardline and the padding to keep it from rubbing on the coolant hose (E) make it clearly OEM designed in, but I can't figure out what it is. I took a pic and put letters on a bunch of stuff...

J is the suspiciously wasteful hose I can't identify... my best guess is that this is a bunch of excess hose that would have hooked up to an oil-water cooler on the euro cars... but that's a total guess.

I really can't fathom what purpose the J loop has, and it sure sure seems like something that ought to get shortened or deleted if possible. Anyone know if that's been done? Also, is this something that could reasonably be un-ziptied and moved out of the way, or is it delicate and dangerous to pull on?

For fun we can also play name that hose... let me know if I got anything wrong here...

A - the bottom of the vent hose attachment (that one would want to replace with a block off plate)
B - Dipstick
C - Crank sensor wire
D - Sandwich plate
E - Coolant hose
F - Hose to Coolant Reservior
G - Some sensor I can't ID
H - Wire for sensor G
Attached Images
 

2005 Lotus Elise, Starlight Black # 111 SSM NER SCCA Solo - 1835lbs up to 1.65 Lat [email protected]~55mph (asphalt) 193whp 142wtq Normally Aspirated.

http://www.the111shift.com/p/the-build.html

https://www.youtube.com/c/the111shift
fsparv is offline  
Sponsored Links
Advertisement
 
post #2 of 8 (permalink) Old 07-18-2017, 04:57 PM
Registered User
 
kfennell's Avatar
 
Join Date: Jun 2015
Posts: 1,838
https://www.lotustalk.com/forums/f311...32/index3.html

2007 Exige S with almost every track mod...
kfennell is offline  
post #3 of 8 (permalink) Old 07-18-2017, 05:02 PM Thread Starter
Registered User
 
fsparv's Avatar
 
Join Date: Feb 2009
Location: Boston Area
Posts: 656
Garage
Heh, thanks looks like I was right... it really is stupid. hmm.

2005 Lotus Elise, Starlight Black # 111 SSM NER SCCA Solo - 1835lbs up to 1.65 Lat [email protected]~55mph (asphalt) 193whp 142wtq Normally Aspirated.

http://www.the111shift.com/p/the-build.html

https://www.youtube.com/c/the111shift
fsparv is offline  
 
post #4 of 8 (permalink) Old 07-18-2017, 07:53 PM
Registered User
 
Join Date: Jan 2015
Posts: 84
The bottom part of the hose isn't too hard to get to from below - A. Three m8 bolts and it is off. You can then put a bung in the rubber hose after plating the outlet in the rocker cover and drill and tap a hole for the drain hose from your new oil catch can so it can drain back in here. This way you don't have to run a line to your sump (if you have an aftermarket one with bungs).


Sent from my iPhone using Tapatalk
breeze91 is offline  
post #5 of 8 (permalink) Old 07-18-2017, 08:51 PM
Sold my Exige S
 
+TSRAGR's Avatar
 
Join Date: Aug 2011
Location: TX Coast
Posts: 930
I couldn't remove the bottom vent tube fitting with the engine and supercharger intact - one of the bolts would not budge in that crawl space. So I just plugged off the port and cut the vent tube.
Attached Images
 
+TSRAGR is offline  
post #6 of 8 (permalink) Old 07-19-2017, 05:30 AM Thread Starter
Registered User
 
fsparv's Avatar
 
Join Date: Feb 2009
Location: Boston Area
Posts: 656
Garage
@breeze91 I'm planning on routing a drain tube where I can drain periodically. I want to know if I'm starting to produce lots of blow-by.

@+TSRAGR : That sort of thing had occurred to me, but I wasn't sure that I would have a durable solution for plugging it that was easier to apply than the bolts were to access. How did you block it?

Pulling the U-bend out of the way and zip tying it to the big heater hose where it can't rub has made for a lot more working room, so that's good. Not sure if I want to leave it there though. Worry about the zip tie rubbing on the hose... what I really want is to delete the U-bend all together.

2005 Lotus Elise, Starlight Black # 111 SSM NER SCCA Solo - 1835lbs up to 1.65 Lat [email protected]~55mph (asphalt) 193whp 142wtq Normally Aspirated.

http://www.the111shift.com/p/the-build.html

https://www.youtube.com/c/the111shift
fsparv is offline  
post #7 of 8 (permalink) Old 07-22-2017, 07:24 PM Thread Starter
Registered User
 
fsparv's Avatar
 
Join Date: Feb 2009
Location: Boston Area
Posts: 656
Garage
Well Vent tube is out and blocking plates are in: Here's what it took on an 05 N/A Elise - this was with the clam already off for other reasons. YMMV if you try to leave the clam on.

1) un-nut from valve cover
2) unbolt support (bolt shared with dipstick support)
3) Tie U-bend out of way
4) Pop dipstick tube out (it covers one of the 3 nuts)
5) Fumble around a lot at funny angles, scrape your hand's and fingers at least 3 times and eventually unbolt the bottom section.
6) Remove the serpentine belt
7) unbolt and shift aside the Alternator
8) Reach in and un-clamp the hose connecting the two halves of the vent tube
9) Remove the top half of the tube from the top.
10) Remove the bottom half of the tube through the bottom.
11) Remove old gaskets
12) Add new gaskets ($3 each from MWR, so really no reason not to replace them)
13) Carefully follow the torque spec for the valve cover plate (7 ft/lbs), smile feeling proud for following the spec.
14) Fumble around with a short socket wrench and short/long 10mm sockets, curse a bunch and eventually hope you got something like the right torque (also 7 ft/lbs) for the 3 bolts on the bottom plate, resolve to check for leaks later.
15) Pop dipstick back in (I oiled the o-ring for good measure, hope it didn't get bunged up on the way out or in)
16) Add a split washer to the bolt to stand in for the lost thick ness of the tab from the vent tube and re-bolt the dipstick up top.
17) Re-bolt the alternator, wish you could find the torque specs for the bolts (any help here?)
18) Replace serpentine.

Nothing horrible, but mildly irritating access issues for the bottom bolts

2005 Lotus Elise, Starlight Black # 111 SSM NER SCCA Solo - 1835lbs up to 1.65 Lat [email protected]~55mph (asphalt) 193whp 142wtq Normally Aspirated.

http://www.the111shift.com/p/the-build.html

https://www.youtube.com/c/the111shift
fsparv is offline  
post #8 of 8 (permalink) Old 07-22-2017, 09:16 PM
Registered User
 
RichardNHCooper's Avatar
 
Join Date: Apr 2008
Location: Perth, western Australia
Posts: 545
G ?

Quote:
Originally Posted by fsparv View Post
Ok so I've ordered my self a catch can from BOE, and some stuff I read seemed to indicate that once you have the catch can, you can do the vent hose delete without the risk of dipstick blowouts. So I ordered that kit too, and tonight I was investigating how hard this would be to do, and it's quickly becoming apparent that the bottom half of the crank vent hose is ridiculously hard to get to. In the process of investigation, I discovered that despite the lack of apertures in the block in that area there seems to be a metric but load of rubber hose, including a very suspiciously wasteful loop(!!) involving a hardline u-bend. The hardline and the padding to keep it from rubbing on the coolant hose (E) make it clearly OEM designed in, but I can't figure out what it is. I took a pic and put letters on a bunch of stuff...

J is the suspiciously wasteful hose I can't identify... my best guess is that this is a bunch of excess hose that would have hooked up to an oil-water cooler on the euro cars... but that's a total guess.

I really can't fathom what purpose the J loop has, and it sure sure seems like something that ought to get shortened or deleted if possible. Anyone know if that's been done? Also, is this something that could reasonably be un-ziptied and moved out of the way, or is it delicate and dangerous to pull on?

For fun we can also play name that hose... let me know if I got anything wrong here...

A - the bottom of the vent hose attachment (that one would want to replace with a block off plate)
B - Dipstick
C - Crank sensor wire
D - Sandwich plate
E - Coolant hose
F - Hose to Coolant Reservior
G - Some sensor I can't ID
H - Wire for sensor G
G is the oil pressure sensor.
fsparv likes this.

2009 Elise S,Rev 400 ,t Ferrea Valves , MWR springs,PPE headers and decat,SSC Harness bar, PenskeDA,Shaved V2 steering arms ,FF engine damper. Saikou Michi catch cans, Modded Toyota E153 gearbox ,60l Proalloy fuel tank , Aeromotive 320 fuel pump,Exedy clutch LSD , SSC ECU, CompositeWorx SP1 seats ,Varexy muffler, Haltech Elite 1500 ECU, Racepak IQ3 Street dash, Aussie-clamhinge.
RichardNHCooper is offline  
Sponsored Links
Advertisement
 
Reply

  LotusTalk - The Lotus Cars Community > Lotus Discussions > Powertrain (Engine, Transmission, etc)

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



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