Dallas Reedís >700whp turbocharged k20 Elise - Page 2 - LotusTalk - The Lotus Cars Community
 10Likes
Reply
 
LinkBack Thread Tools Display Modes
post #21 of 94 (permalink) Old 08-05-2015, 01:41 PM
shay2nak
 
shay2nak's Avatar
 
Join Date: Dec 2003
Location: Calipornia
Posts: 24,900
Does Burger King still give out those paper crowns? Wear one of those while you're driving.

** save ~10 lbs gain 1 hp ** EQ: Y=(190*X) / (1984-X) where Y is (HP) and X is (lbs)

'07 Lotus Exige S310


WTC 2
shay2nak is offline  
Sponsored Links
Advertisement
 
post #22 of 94 (permalink) Old 08-05-2015, 01:53 PM Thread Starter
because racecar
 
dallasreed's Avatar
 
Join Date: Mar 2011
Location: Indy
Posts: 540
That would actually be pretty amusing. Chances are I will remove their stickers at least from the back window
dallasreed is offline  
post #23 of 94 (permalink) Old 08-05-2015, 03:38 PM
Registered User
 
LiveToDrive's Avatar
 
Join Date: Nov 2012
Location: Alta Loma, CA
Posts: 956
F'ing trolls are everywhere man...it's a damn epidemic. Just gotta ignore them. Subscribed to this awesome thread.
LiveToDrive is offline  
 
post #24 of 94 (permalink) Old 08-05-2015, 05:08 PM
Elise Guru
 
fzust's Avatar
 
Join Date: Oct 2003
Location: Tempe, AZ
Posts: 3,048
Quote:
Originally Posted by dallasreed View Post
That would actually be pretty amusing. Chances are I will remove their stickers at least from the back window
We expect that kind of class in XP, you can leave'em on in SSM though. :P


Multiple SCCA Solo National and Pro Solo National Championships


Blackwatch Racing - Better for the Street, Proven on the track

Lotus Performance Parts and Accessories

Winning Suspension
- Larini Exhaust - BWR Close Ratio Gearset
We build the toughest Lotus Transmissions for the Elige. From Stock to SCCA-NASA-World Challenge Winners.

6UL wheels
fzust is offline  
post #25 of 94 (permalink) Old 08-05-2015, 05:10 PM
BANNED
 
Join Date: Dec 2014
Posts: 241
Quote:
Originally Posted by LiveToDrive View Post
F'ing trolls are everywhere man...it's a damn epidemic. Just gotta ignore them. Subscribed to this awesome thread.
lel
vaughn is offline  
post #26 of 94 (permalink) Old 08-06-2015, 04:05 AM
Registered User
 
Join Date: Feb 2013
Posts: 76
Be VERY careful with Chris Barrys AC kit. The bracket allows the stock Rover AC compressor to be used, which is all fine and well, but it uses a TINY daihatsu charade alternator, i think its around 45 amps, IMO no way NEAR enough to drive even a stock engine. The stock alternator on the k20 is 100amps.

Now, I am an electrical engineer for an automotive OEM, and 45amps is stupidly small, you will be running on the limit by simply switching on the headlamps and if i remember doing my calculations if you had the high beams switched on; the battery would no longer be charging. This is on a stock engine stock chassis setup.

Think about how much more current than stock simply your pumps are drawing. Anyways, I rant.....

Chris is a great guy and very very helpful, but on this point I totally disagree. If you could get a daihatsu charade alternator built to at least 100amp spec then it would be great IMO
nuk1ear is offline  
post #27 of 94 (permalink) Old 08-06-2015, 05:24 AM Thread Starter
because racecar
 
dallasreed's Avatar
 
Join Date: Mar 2011
Location: Indy
Posts: 540
Good to know. I will find out how much alternator can fit with his kit. As it stands I haven't ordered it yet. Do you know of any other options?

I may end up just figuring out some solution myself.

Considering I am going to be running four 300lph+ lph fuel pumps, pumps for the air/water, and an aftermarket head unit and sound system, HIDs and probably some other stuff that uses more juice than stock I don't think 45a would get me very far.
dallasreed is offline  
post #28 of 94 (permalink) Old 08-06-2015, 04:15 PM
Registered User
 
Join Date: Feb 2013
Posts: 76
Quote:
Originally Posted by dallasreed View Post
Good to know. I will find out how much alternator can fit with his kit. As it stands I haven't ordered it yet. Do you know of any other options?

I may end up just figuring out some solution myself.

Considering I am going to be running four 300lph+ lph fuel pumps, pumps for the air/water, and an aftermarket head unit and sound system, HIDs and probably some other stuff that uses more juice than stock I don't think 45a would get me very far.
To be honest, the AC compressor idea is actually very simple, it basically mounts the AC comp directly in place of the alternator just using a simple H pattern bracket to adapt the different bolt pattern, and uses a couple of small arms to hold the new alternator down stairs next to the sump. IMO i would just live without the AC.

Also, forgot to mention the daihatsu alternator is a couple of ribs smaller on the belt, another thing I did not agree with but its not so bad (I was worried about running superchargers).
nuk1ear is offline  
post #29 of 94 (permalink) Old 08-06-2015, 06:23 PM
CAR ENTHUSIAST
 
poonhunter's Avatar
 
Join Date: Apr 2013
Location: Seattle
Posts: 96
Garage
what a beast..... I'm jealous
poonhunter is offline  
post #30 of 94 (permalink) Old 08-06-2015, 06:48 PM Thread Starter
because racecar
 
dallasreed's Avatar
 
Join Date: Mar 2011
Location: Indy
Posts: 540
Quote:
Originally Posted by poonhunter View Post
what a beast..... I'm jealous
It's OK poonhunter, come out to Indy and we can go for a ride
dallasreed is offline  
post #31 of 94 (permalink) Old 08-07-2015, 07:01 PM
Inactive
 
dstevens's Avatar
 
Join Date: Mar 2007
Location: California
Posts: 830
Clutch: You can play around your whole life with high load twin disks than put so much load on the crank that you spit out the thrust bearings (I've been there with multiple clutches, including the clutch master). Or you can bite the bullet and get a carbon / carbon twin disk with stock pedal pressure and 840 lbs torque rating. I've had zero problems with my Tilton in 8 years. Beware clutch manufacturers who don't know torque from power.
AC: The standard compressors works. There is a very simple top bracket and a reasonable bottom bracket. Once I get access to the drawings for my engine I will post them.
Alternator: See above. Keep stock alternator.

2005 Elise with Honda engine
dstevens is offline  
post #32 of 94 (permalink) Old 08-07-2015, 07:12 PM Thread Starter
because racecar
 
dallasreed's Avatar
 
Join Date: Mar 2011
Location: Indy
Posts: 540
Certainly interested in your drawings for the brackets. If the solution fits for my implementation I will have them or something similar fabbed.

Carbonetics was possibly next step but the clutch masters is feeling OK. Competition clutch was a leg breaker. Did you have some problem with the clutch master twin disc specifically?

Last edited by dallasreed; 08-07-2015 at 07:13 PM.
dallasreed is offline  
post #33 of 94 (permalink) Old 08-07-2015, 08:11 PM
Inactive
 
dstevens's Avatar
 
Join Date: Mar 2007
Location: California
Posts: 830
Previous engine, but the clutch master wore out the crank thrust bearings in a matter of months. Carbon is fantastic because it releases as soon as it gets 0.001" clearance, and the coefficient of friction goes up with temperature. Only downside is the price...

2005 Elise with Honda engine
dstevens is offline  
post #34 of 94 (permalink) Old 08-08-2015, 01:30 AM
Registered User
 
AK_S2K's Avatar
 
Join Date: Aug 2015
Posts: 14
Nice build, thing will scoot. In for updates!

- Andy
AK_S2K is offline  
post #35 of 94 (permalink) Old 08-08-2015, 06:04 AM Thread Starter
because racecar
 
dallasreed's Avatar
 
Join Date: Mar 2011
Location: Indy
Posts: 540
Looks like from your advice and some looking on the k20a forum spring pressure on the clutch pushes the crank into the thrust bearings and grinds the crank. Looking over the k20a forums it appears this has happened to a few people there as well.

Appears proper adjustment of the clutch master cylinder and pedal are a big deal in preventing this issue, and a clutch stop would be a very good idea also.

I guess you adjusted everything and still had issue?

2005 Lotus Elise turbo k20a2 757whp 536wtq 31psi [email protected]
2005 Lotus Elise 2zz supercharged 'streetable' race car
2007 Lamborghini Gallardo Spyder
2010 Ford F350
2004 Mazda RX8
2007 Mazda Mazdaspeed 3
2010 Ford Fusion Hybrid
I passed my license test in a 3cyl 70hp Geo Metro
I learned to drive a manual on a Lotus Elise
dallasreed is offline  
post #36 of 94 (permalink) Old 08-08-2015, 07:20 AM
Inactive
 
dstevens's Avatar
 
Join Date: Mar 2007
Location: California
Posts: 830
It's just that the crank trust bearing is small, and it just can't cope large amounts of end thrust on the crank. The pedal adjustment is only an issue if the clutch release is bottoming out, which you can normally feel as the springs go over center.
The #1 thing to do is to disable any clutch interlock and never crank the engine with the clutch disengaged (ie pedal down). If the thrust bearing is overloaded then cranking with zero oil pressure is going to make it really, really, unhappy.
In my opinion any clutch interlock should not allow cranking unless the clutch is up (not down), but the lawyers don't see it that way. My Elise didn't have an interlock - I think only Canada models did.
As far a clutches go, the Exedy Hyper Single handles about 4 time the torque that Exedy claims. From there the Tilton twin plates are good, but the Tilton carbon/carbon is the best (rated at 840 ft lbs, available in 540 ft lbs too).

2005 Elise with Honda engine
dstevens is offline  
post #37 of 94 (permalink) Old 08-08-2015, 07:36 PM
Registered User
 
Join Date: Jun 2009
Location: Toronto, Ontario, Canada
Posts: 935
re: Clutch

+1

I like Tilton C-C clutches. Every few years, I look at their drawings of a 5.5" triple CC clutch and call them to see, if it will fit into a K20 bellhousing.... It does not!

7.25" double works.

I got an ATS clutch and adapted a Tilton hydraulic throw-out bearing. Took some playing with piston length... Based on ATS clutch and the extra long piston I had to get, there should be room for a 5.5" triple!!!

Pedal stop is not a big deal either way...


CC clutches are the greatest.

Many years ago, I had many problems with metal clutches... Switched to CC and everything worked so well and lasted forever... and cost a small fortune...

Anton



Quote:
Originally Posted by dstevens View Post
Clutch: You can play around your whole life with high load twin disks than put so much load on the crank that you spit out the thrust bearings (I've been there with multiple clutches, including the clutch master). Or you can bite the bullet and get a carbon / carbon twin disk with stock pedal pressure and 840 lbs torque rating. I've had zero problems with my Tilton in 8 years. Beware clutch manufacturers who don't know torque from power.
AC: The standard compressors works. There is a very simple top bracket and a reasonable bottom bracket. Once I get access to the drawings for my engine I will post them.
Alternator: See above. Keep stock alternator.
ageshelin is offline  
post #38 of 94 (permalink) Old 08-12-2015, 10:04 AM Thread Starter
because racecar
 
dallasreed's Avatar
 
Join Date: Mar 2011
Location: Indy
Posts: 540
Tuning is done. Here is a kill mode dyno plot.
This is all the MWR/FIC 1650cc's will do at 90% with E85

757whp
536wtq
31psi



2005 Lotus Elise turbo k20a2 757whp 536wtq 31psi [email protected]
2005 Lotus Elise 2zz supercharged 'streetable' race car
2007 Lamborghini Gallardo Spyder
2010 Ford F350
2004 Mazda RX8
2007 Mazda Mazdaspeed 3
2010 Ford Fusion Hybrid
I passed my license test in a 3cyl 70hp Geo Metro
I learned to drive a manual on a Lotus Elise

Last edited by dallasreed; 08-12-2015 at 10:15 AM.
dallasreed is offline  
post #39 of 94 (permalink) Old 08-12-2015, 11:10 AM
Registered User
 
glagola1's Avatar
 
Join Date: Apr 2012
Posts: 1,167
good lord jesus
glagola1 is offline  
post #40 of 94 (permalink) Old 08-12-2015, 11:25 AM
shay2nak
 
shay2nak's Avatar
 
Join Date: Dec 2003
Location: Calipornia
Posts: 24,900
wow

** save ~10 lbs gain 1 hp ** EQ: Y=(190*X) / (1984-X) where Y is (HP) and X is (lbs)

'07 Lotus Exige S310


WTC 2
shay2nak 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