Alunox question - LotusTalk - The Lotus Cars Community
 
LotusTalk.com is the premier Lotus Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 03-05-2013, 07:37 PM   #1 (permalink)
Registered User
 
Join Date: Feb 2013
Posts: 8
Alunox question

Hi, New to the forum but have been working on my 88 for about
8 years on and off (mostly on). Been in touch with Leon at Alunox about
a manifold. My question, is the T3 flange on an 87-88 in the
same position as 89 on. Know about wastegate and such. Thanks
for info.
Lorenstump is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 03-05-2013, 08:34 PM   #2 (permalink)
Registered User
 
MRDANGERUS's Avatar
 
Join Date: Aug 2010
Location: USA
Posts: 715
Garage
They are not at the same position. Also, 86-88 is lower by 1.5".
__________________
Extreme Esprit Turbo X330
__________________________________
http://www.thelotusforums.com/forums/garage/
MRDANGERUS is offline   Reply With Quote
Old 03-05-2013, 08:39 PM   #3 (permalink)
Registered User
 
Join Date: Feb 2013
Posts: 8
Thanks, towards bell housing or side wall?
Lorenstump is offline   Reply With Quote
Old 03-05-2013, 08:41 PM   #4 (permalink)
Registered User
 
Join Date: Feb 2013
Posts: 8
Nice to hear from you, read many of your posts!
Lorenstump is offline   Reply With Quote
Old 03-06-2013, 08:36 PM   #5 (permalink)
Registered User
 
MRDANGERUS's Avatar
 
Join Date: Aug 2010
Location: USA
Posts: 715
Garage
Are you about to ask Leon to make you a manifold for 86-88 car? Alunox is very good, but also not inexpensive. Group buy would be the way to go, perhaps.

Position is -1.5" on Z axis.
I never compared X or Y.
Although they both are Garrett T3 turbos, but they are very diferrent and therefore flanges are different.
You should send Leon your old manifold or make a jig simulating mating surfaces and bolts location.

The Turbocharger on the USA Turbos with Bosch K Injection (86,87 & 88) is Garrett T3
Lotus Part No. C910E6372F (as listed in Lotus Parts Book), external Air Research wastegate, 3 bolt exh.flange
Specification as follows :-

0.63 A/R Turbine
0.42 Comp
55 Trim Comp Wheel
Boost set at 0.66 Bar

The European cars from 88 MY (X180 Intro), and USA 89+, used a Garrett T3 with 'Integral Wastegate'.
Lotus Part No. A910E6889F (as listed in Parts Book), 4 bolt exh flange
Specification as follows :-

0.63 A/R Turbine
0.42 Comp
55 Trim Comp Wheel
__________________
Extreme Esprit Turbo X330
__________________________________
http://www.thelotusforums.com/forums/garage/

Last edited by MRDANGERUS; 03-06-2013 at 09:08 PM.
MRDANGERUS is offline   Reply With Quote
Old 03-06-2013, 09:36 PM   #6 (permalink)
Registered User
 
Join Date: Feb 2013
Posts: 8
Talking to Leon now(back and forth) sending pics. Seeing about
getting the manifold unfinished so I can fit the wastegate where I need it. Comp turbo, triple bearing, billet comp wheel, Tial wastegate. So I also have to fab new turbo adapter and quite a bit of piping anyway. Hope the manifold was close to begin with, but mostly that doesn't happen with our model! No pain no gain. Small space for the wastegate due to the inboards but Leon says the merge can be down to 3in long. Tial 38mm is very compact so I'll make it fit. West coast so I can only talk to him late at night or early AM.
Lorenstump is offline   Reply With Quote
Old 04-11-2013, 04:49 PM   #7 (permalink)
Registered User
 
StevenD57's Avatar
 
Join Date: Jan 2011
Location: NE Ohio
Posts: 340
Why is there a position difference between the Bosch CIS cars with the external wastegate verses the later Delco EFI cars with the internal wastegate? Is it because they needed room under the manifold for the wastegate or what?
__________________
Steven DuChene
1974 Jensen-Healey w/Lotus 2.0L 907 with EFI & crankfired Ignition conversion
1985 Jaguar XJS 4.0L w/Getrag 5spd
1990 Lotus Esprit SE w/AWI monoblock wheels (wrecked)
1988 Lotus Esprit Turbo w/SE bodywork and burnt pistons
StevenD57 is offline   Reply With Quote
Old 05-01-2013, 11:40 PM   #8 (permalink)
Registered User
 
Join Date: Feb 2013
Posts: 8
Didn't need more room actually the turbo is lower by about 1"
And the angle of the flange is different also. Have the allunox system
At the welders now. Had to build a jig from the cast manifold.
Cut Leon's beautiful work to change the angle and length. Also
Also cut in a two tube merge to add a Vband for a Tial wastegate.
Why not go with an internal wastegate? Have had a new Comp Triplex
on for year now. Externals can allow for more flow and doesn't
disrupt the exducer flow as badly. If you are thinking of changing
to a tubular manifold there's a lot involved.
Lorenstump is offline   Reply With Quote
Old 05-02-2013, 06:28 AM   #9 (permalink)
Registered User
 
StevenD57's Avatar
 
Join Date: Jan 2011
Location: NE Ohio
Posts: 340
So on the later cars with the internal wastegate they must have raised the turbo to allow room for the wastegate? I am recalling where the turbo is placed on my 1988 car and I don't recall a problem with room for the wastegate but I could be wrong.

So did Leon give you any discount on the header since you got it unfinished? I will probably have to do the same with my 1988 car so that is why I am asking.
__________________
Steven DuChene
1974 Jensen-Healey w/Lotus 2.0L 907 with EFI & crankfired Ignition conversion
1985 Jaguar XJS 4.0L w/Getrag 5spd
1990 Lotus Esprit SE w/AWI monoblock wheels (wrecked)
1988 Lotus Esprit Turbo w/SE bodywork and burnt pistons
StevenD57 is offline   Reply With Quote
Old 05-02-2013, 08:39 AM   #10 (permalink)
Registered User
 
Join Date: Feb 2013
Posts: 8
Could be for the internal wastegate space, don't know.About
four maybe five years ago took the wastegate apart. Diaphragm
failed. Found out how expensive and even hard to get that was. I
found a cast piece that replaces our wastegate section on Ebay.
Must be from an 89. Tried like a mother to get those clipped manifold
bolts off, so opted to get bigger turbo and keep the manifold.
Hunted down an HKS diaphragm out of Australia that fit other
than bolt holes and made that work. Wanted eventually to get
rid of that 50lb cast log anyway. Hooked an AEM boost controller
to the old gate and worked great. Replaced the exhaust from the
wastegate adapter back with a stainless system with no cat. Added
AEM wideband. All was good. Found a crack in the bellows flex pipe
after the adapter this year and saw the Alunox system. Figured nows
the time. Called Leon, He didn't know about the different turbo
flange position. Went on this forum and asked. Mr. Dangerous
aka John was the only responce. See above. Sent Leon pictures and
he agreed 88 was different. Standard system (no group buy) was
990 pounds. He said he could fab it to fit with wastegate flange
for 1500 pounds. Ouch. He would have to get access to an 87 or
88 fed to make it fit, so I realize why so much. Suggested he
could just send me the manifold without the T3 flange and I
would cut and fit. Wastegate merge would also need to be made
and I was ok with that too but no discount. Received the manifold
all welded up. Texted Leon and he apologized and said he would
send me a new flange and some tube for the wastegate flange.
Haven't got that yet but am building a jig to change the manifold
anyway. Engines out, and parts spread all over the country anyway.
Lorenstump is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

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



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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



All times are GMT -8. The time now is 03:47 PM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.3.2
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.