X-180 CAMS, MOP, SLA & related issues - Page 2 - LotusTalk - The Lotus Cars Community
 7Likes
Reply
 
LinkBack Thread Tools Display Modes
post #21 of 38 (permalink) Old 09-19-2017, 08:40 AM Thread Starter
Integrator
 
MRDANGERUS's Avatar
 
Join Date: Aug 2010
Location: N-East Central USA
Posts: 2,539
Garage
MRDANGERUS is offline  
Sponsored Links
Advertisement
 
post #22 of 38 (permalink) Old 09-19-2017, 04:12 PM
Dreaded Prior Owner
 
snowrx's Avatar
 
Join Date: Oct 2011
Location: Far from another Esprit.....
Posts: 581
I'd like to see a sealed, low rpm version of Suzuki's mechanisim for belt driven cam motors. Nut'in fancy, but would give you a different timing at high rpm w/o electronics or hydraulics.

Attached Images
 

1985 BRG Turbo Esprit
Chargecooled w/Megasquirt EFI
snowrx is offline  
post #23 of 38 (permalink) Old 09-19-2017, 04:31 PM
Dreaded Prior Owner
 
snowrx's Avatar
 
Join Date: Oct 2011
Location: Far from another Esprit.....
Posts: 581
Suzuki is driving a chain at 13,000 rpm or so in an oil bath, for us one would have to make a belt pulley as a enclosed can with a seal at the rear that held these parts, likely with larger weights/lighter springs to work at our much lower rpms.
Attached Images
   

1985 BRG Turbo Esprit
Chargecooled w/Megasquirt EFI
snowrx is offline  
 
post #24 of 38 (permalink) Old 09-19-2017, 08:01 PM Thread Starter
Integrator
 
MRDANGERUS's Avatar
 
Join Date: Aug 2010
Location: N-East Central USA
Posts: 2,539
Garage
MRDANGERUS is offline  
post #25 of 38 (permalink) Old 01-01-2018, 11:44 AM Thread Starter
Integrator
 
MRDANGERUS's Avatar
 
Join Date: Aug 2010
Location: N-East Central USA
Posts: 2,539
Garage
Quote:
Originally Posted by snowrx View Post
Suzuki is driving a chain at 13,000 rpm or so in an oil bath, for us one would have to make a belt pulley as a enclosed can with a seal at the rear that held these parts, likely with larger weights/lighter springs to work at our much lower rpms.
Do you have a PN or model number of the bike?
MRDANGERUS is offline  
post #26 of 38 (permalink) Old 01-01-2018, 02:43 PM
Dreaded Prior Owner
 
snowrx's Avatar
 
Join Date: Oct 2011
Location: Far from another Esprit.....
Posts: 581
The feature was introduced on the 2017 Suzuki GSX-R1000, a top of range sportbike. Porabably be implemented to other displacements/models as they go through product cycles

1985 BRG Turbo Esprit
Chargecooled w/Megasquirt EFI
snowrx is offline  
post #27 of 38 (permalink) Old 06-09-2018, 06:25 AM Thread Starter
Integrator
 
MRDANGERUS's Avatar
 
Join Date: Aug 2010
Location: N-East Central USA
Posts: 2,539
Garage
MRDANGERUS is offline  
post #28 of 38 (permalink) Old 06-09-2018, 08:49 AM
Registered User
 
greenisGood's Avatar
 
Join Date: Dec 2016
Location: Near Omaha,Ne.
Posts: 418
Which car Mr D S4s?
greenisGood is online now  
post #29 of 38 (permalink) Old 06-09-2018, 08:52 AM
Registered User
 
greenisGood's Avatar
 
Join Date: Dec 2016
Location: Near Omaha,Ne.
Posts: 418
BTW I thought it was "a scalded cat", or "a striped ape"
greenisGood is online now  
post #30 of 38 (permalink) Old 06-09-2018, 12:42 PM Thread Starter
Integrator
 
MRDANGERUS's Avatar
 
Join Date: Aug 2010
Location: N-East Central USA
Posts: 2,539
Garage
Quote:
Originally Posted by greenisGood View Post
Which car Mr D S4s?
S4s!

"Ape" sounds more outrageous, just visualize such an event, ROLFMAO!
greenisGood likes this.
MRDANGERUS is offline  
post #31 of 38 (permalink) Old 11-24-2018, 03:46 PM Thread Starter
Integrator
 
MRDANGERUS's Avatar
 
Join Date: Aug 2010
Location: N-East Central USA
Posts: 2,539
Garage
Quote:
Originally Posted by greenisGood View Post
Which car Mr D S4s?
Now, I have 106/104 MOP on both cars. Early exhaust opening sends more energy (pressure) to the turbine=faster response.
Attached Images
 
greenisGood likes this.
MRDANGERUS is offline  
post #32 of 38 (permalink) Old 11-25-2018, 06:56 AM
Registered User
 
greenisGood's Avatar
 
Join Date: Dec 2016
Location: Near Omaha,Ne.
Posts: 418
I'm curious why, when you were in there anyhow, you stuck with a black belt instead of the blue?
greenisGood is online now  
post #33 of 38 (permalink) Old 02-02-2019, 08:07 PM Thread Starter
Integrator
 
MRDANGERUS's Avatar
 
Join Date: Aug 2010
Location: N-East Central USA
Posts: 2,539
Garage
Quote:
Originally Posted by greenisGood View Post
I'm curious why, when you were in there anyhow, you stuck with a black belt instead of the blue?
I have used the PO's old belt for swapping pulleys and repetitive "dry fitting". After finding the sweet spot, I changed to blue belt. I tried to avoid inflicting a damage to the new belt.
Attached Images
 
DaveS4s and greenisGood like this.

Last edited by MRDANGERUS; 02-04-2019 at 07:30 PM.
MRDANGERUS is offline  
post #34 of 38 (permalink) Old 02-14-2019, 06:18 AM Thread Starter
Integrator
 
MRDANGERUS's Avatar
 
Join Date: Aug 2010
Location: N-East Central USA
Posts: 2,539
Garage
"Slight" dot misalignment on the cam pulleys translates to 2x crank discrepancy.

If you're off by 1 tooth = huge consequences to the engine!

1 tooth on cam pulley = 9degrees of cam rotation = 18 degrees of crankshaft rotation.
1/2 T = 4.5 deg @ cam = 9 deg @ crank
1/4 T = 2.25 [email protected] = 4.5 deg @crank
Attached Images
 

Last edited by MRDANGERUS; 02-14-2019 at 06:31 AM.
MRDANGERUS is offline  
post #35 of 38 (permalink) Old 02-14-2019, 08:27 AM
Registered User
 
2Many Cars's Avatar
 
Join Date: Jul 2016
Location: NorCal
Posts: 190
Forgive my stupidity but doesn't that imply the pully has only 20 teeth? (18 degrees x 20 = 360 degrees). It seems like there are way more than 20 teeth on all the pullies.

Edit: On reflection I guess this would make sense if the crank pully has roughly 80 teeth and the cam pullies 40 teeth. Is that about right?
2Many Cars is offline  
post #36 of 38 (permalink) Old 03-13-2019, 06:30 AM Thread Starter
Integrator
 
MRDANGERUS's Avatar
 
Join Date: Aug 2010
Location: N-East Central USA
Posts: 2,539
Garage
Esprit 4cyl 910 engine cam pulleys have 40 teeth, 9 degree pitch.
9 deg on the cam corresponds to 18 deg of the crankshaft rotation.

1 T cam pulley = 9degrees of cam rotation = 18 degrees of crankshaft rotation.
1/2 T = 4.5 deg @ cam = 9 deg @ crank
1/4 T = 2.25 [email protected] = 4.5 deg @crank
__________________
MRDANGERUS is offline  
post #37 of 38 (permalink) Old 03-13-2019, 09:03 AM Thread Starter
Integrator
 
MRDANGERUS's Avatar
 
Join Date: Aug 2010
Location: N-East Central USA
Posts: 2,539
Garage
Quote:
Originally Posted by snowrx View Post
Suzuki is driving a chain at 13,000 rpm or so in an oil bath, for us one would have to make a belt pulley as a enclosed can with a seal at the rear that held these parts, likely with larger weights/lighter springs to work at our much lower rpms.
Perhaps this type of sealed sprocket could be adapted? There are several of them on eBay, but I never had Volvo or Toyota, so I leave the practical assessment to others.

2001 VOLVO S40 VARIABLE TIMING SPROCKET CRANKSHAFT TIMING ADJUSTER GEAR W/ SOLENOID - this sprocket has 42 teeth (Esprit has 40), so the new sprocket needs to be made.


Last picture shows Toyota GT
Attached Images
         

Last edited by MRDANGERUS; 03-13-2019 at 10:06 AM.
MRDANGERUS is offline  
post #38 of 38 (permalink) Old 03-13-2019, 10:31 AM
Dreaded Prior Owner
 
snowrx's Avatar
 
Join Date: Oct 2011
Location: Far from another Esprit.....
Posts: 581
And you would need to extensively modify the cam carrier to allow a separate oil feed through the cam to the pulley via the solenoid. Also would need to check oil pressure needed to operate the VVT pulley, the 910 often runs pretty low oil pressure.

1985 BRG Turbo Esprit
Chargecooled w/Megasquirt EFI
snowrx is offline  
Sponsored Links
Advertisement
 
Reply

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

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