Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > 911 Engine Rebuilding Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered
 
cameron.arnott's Avatar
 
Join Date: Jun 2006
Location: Adelaide Australia
Posts: 886
Hi Mark

Keeping the SSI's just in case i need some heat - might do Targa Tassie one day....even Classic Adelaide had some wet weather last year and the demister was needed.

George Cairns in Melbourne makes the muffler hence the name. I know at least once guy running in Sb Historics using one on his '67S with good results and also a heap of tarmac rally guys - both MFI & carbs Obrut (Ryan is one) I'd guess at it being about 1/3 lighter than my triple outlet rally muffler I had on before. When I switched to the Cairns muffler I lost none of my top end and it literally flattened out the 'on cam' feeling of the S cams from about 5k up. Lots more mid range which it sounds like you could do with!

Planning to run a single MSD - twin plug system with 2 MSD coils.

In terms of the cams I guess time will tell but I know Kenik and Camgrinder worked on the combination of a good top end combined with bottom end pull. I believe the key is the 102 degree lobe centres matched with the heads.

Planning to stick to about 8k but I guess time will tell on that one

__________________
'74 RS 3.0 Replica
Porsche 968 Clubsport SOLD
'70 911E Bahia Red SOLD
'71 911 S/T Replica 2.3 Twin plug BEAST SOLD
Old 10-05-2009, 09:40 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #21 (permalink)
Registered
 
cameron.arnott's Avatar
 
Join Date: Jun 2006
Location: Adelaide Australia
Posts: 886
Engine is done! Final specs are as follows:


• 2.4 7R 911/91 case, shuffle pinned, oil bypass mod, 996 turbo pump, case savers, resurface & line bore
• 66mm ‘S’ counterweighted crank , cross drilled, balanced magnafluxed + micro polished
• Pauter rods
• 10.5:1 JE pistons – mechanics special recipe
• Nickies 85.5mm barrels (sized to racing regs here)
• DC 44 Cams on 102 degree lobes
• JB Racing Twin plug distributor
• Supertec head studs
• Heads ported, racing valve springs & titanium retainers ( Steve Weiner)
• Webers with tall secondary venturis, port matched tall PMO manifolds
• Aussie made ‘Cairns’ muffler
• Single MSD

This things rocks! Public thanks to Kenik who's engine specs I basically copied other than induction and minor odds and ends.

A very fun day at the track today
__________________
'74 RS 3.0 Replica
Porsche 968 Clubsport SOLD
'70 911E Bahia Red SOLD
'71 911 S/T Replica 2.3 Twin plug BEAST SOLD
Old 03-03-2010, 11:01 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #22 (permalink)
3 restos WIP = psycho
 
kenikh's Avatar
 
Join Date: Feb 2005
Location: North of Exit 17
Posts: 7,665
Sweet!
__________________

- 1965 911
- 1969 911S
- 1980 911SC Targa
- 1979 930
Old 03-03-2010, 11:11 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #23 (permalink)
Max Sluiter
 
Flieger's Avatar
 
Join Date: Mar 2006
Location: So Cal
Posts: 19,644
Garage
This thread is worthless without photos (or better yet, video with stereo sound).
__________________
1971 911S, 2.7RS spec MFI engine, suspension mods, lightened
Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance

Last edited by Flieger; 03-04-2010 at 01:31 PM.. Reason: spelling
Old 03-04-2010, 12:10 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #24 (permalink)
Registered
 
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
Good news, indeed,....
__________________
Steve Weiner
Rennsport Systems
Portland Oregon
(503) 244-0990
porsche@rennsportsystems.com
www.rennsportsystems.com
Old 03-04-2010, 12:11 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #25 (permalink)
UnRegistered User
 
billybek's Avatar
 
Join Date: Dec 2007
Location: Calgary
Posts: 8,020
Garage
Quote:
Originally Posted by Flieger View Post
This thread is worthless without photos (or better yet, video with stero sound).
+1!!
I have been following this thread for two years and this is all we get!
Come on!
Sounds like a cool motor. Post some pictures and or video soon!
__________________
Bill K.
"I started out with nothin and I still got most of it left...."
83 911 SC Guards Red (now gone)
And I sold a bunch of parts I hadn't installed yet.
Old 03-04-2010, 04:29 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #26 (permalink)
 
Registered
 
cameron.arnott's Avatar
 
Join Date: Jun 2006
Location: Adelaide Australia
Posts: 886
Nothing like an audience

I'll post some stuff when I get home to my own computer.

Thanks also to Herr Weiner, for the magnifcent head work !

Ballpark numbers are around 220 HP at the flywheel....
__________________
'74 RS 3.0 Replica
Porsche 968 Clubsport SOLD
'70 911E Bahia Red SOLD
'71 911 S/T Replica 2.3 Twin plug BEAST SOLD
Old 03-04-2010, 09:06 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #27 (permalink)
Registered
 
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
Quote:
Originally Posted by cameron.arnott View Post
Thanks also to Herr Weiner, for the magnifcent head work !

Ballpark numbers are around 220 HP at the flywheel....
Hey Cam,

You are most welcome,......

Those things do move some air right along.

E-mail me your dyno sheet when you get a chance.
__________________
Steve Weiner
Rennsport Systems
Portland Oregon
(503) 244-0990
porsche@rennsportsystems.com
www.rennsportsystems.com
Old 03-05-2010, 03:04 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #28 (permalink)
3 restos WIP = psycho
 
kenikh's Avatar
 
Join Date: Feb 2005
Location: North of Exit 17
Posts: 7,665
It is a beautiful thing when a plan materializes as planned. That is just awesome.
__________________

- 1965 911
- 1969 911S
- 1980 911SC Targa
- 1979 930
Old 03-05-2010, 04:23 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #29 (permalink)
Registered
 
cameron.arnott's Avatar
 
Join Date: Jun 2006
Location: Adelaide Australia
Posts: 886
I'm going to get the car back to the mechanic next week. The emulsion tubes (F3's) need a bit of sorting, mixtures are good but transitioning up from 2500-4000 at part throttle is a not quite smooth. Will try to get it back on the dyno as its only been run to 7300 on its set up run. Maybe F 26's might be worth a try?

Fairly conservative advance at the moment as well.

Running 34 venturis still, not sure if 36's might kill the low rev driveability a little.....

The track day might have helped things loosen up a little as well so another run up to 8K might be interesting!

Will do Steve
__________________
'74 RS 3.0 Replica
Porsche 968 Clubsport SOLD
'70 911E Bahia Red SOLD
'71 911 S/T Replica 2.3 Twin plug BEAST SOLD

Last edited by cameron.arnott; 03-05-2010 at 09:01 PM..
Old 03-05-2010, 07:08 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #30 (permalink)
Registered
 
Highfield's Avatar
 
Join Date: Nov 2003
Location: United Kingdom
Posts: 524
Cam - great to see the time taken and investment in research (and no doubt the saving up) has paid off.

Looking forward to pictures, video and dyno sheet :-)

Ian
__________________
Ian Highfield

1992 964 C2 Manual with RS Suspension etc.
1973 911T Narrow body Hot Rod with 2.7 Carrera engine and loads of period modsl - SOLD
1986 Carrera Coupe Sport with Stainless Silencer and SW Chip (256 fwbhp) - SOLD
Old 03-06-2010, 03:51 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #31 (permalink)
Registered
 
cameron.arnott's Avatar
 
Join Date: Jun 2006
Location: Adelaide Australia
Posts: 886
Thanks Ian

The car is going back to the mechanics this week for a little bit of a fiddle.

Hopefully I'll have a new dyno sheet at the end of the week. I've just flown back home and relaised I didn't take a copy of the first run sheet Bugger!

Cheers
__________________
'74 RS 3.0 Replica
Porsche 968 Clubsport SOLD
'70 911E Bahia Red SOLD
'71 911 S/T Replica 2.3 Twin plug BEAST SOLD
Old 03-07-2010, 06:59 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #32 (permalink)
Registered
 
cameron.arnott's Avatar
 
Join Date: Jun 2006
Location: Adelaide Australia
Posts: 886
Evidence!

YouTube - Twin Plug Porsche Engine.MOV [img]







__________________
'74 RS 3.0 Replica
Porsche 968 Clubsport SOLD
'70 911E Bahia Red SOLD
'71 911 S/T Replica 2.3 Twin plug BEAST SOLD
Old 03-08-2010, 03:24 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #33 (permalink)
Registered
 
cameron.arnott's Avatar
 
Join Date: Jun 2006
Location: Adelaide Australia
Posts: 886
Some track footage...

YouTube - Mallalla Track Session 2 (3 laps).wmv
__________________
'74 RS 3.0 Replica
Porsche 968 Clubsport SOLD
'70 911E Bahia Red SOLD
'71 911 S/T Replica 2.3 Twin plug BEAST SOLD
Old 03-09-2010, 03:02 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #34 (permalink)
UnRegistered User
 
billybek's Avatar
 
Join Date: Dec 2007
Location: Calgary
Posts: 8,020
Garage
Sounds great!
It is nice to see some leaves on the trees too!
__________________
Bill K.
"I started out with nothin and I still got most of it left...."
83 911 SC Guards Red (now gone)
And I sold a bunch of parts I hadn't installed yet.
Old 03-09-2010, 04:33 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #35 (permalink)
Max Sluiter
 
Flieger's Avatar
 
Join Date: Mar 2006
Location: So Cal
Posts: 19,644
Garage
Bonza!
__________________
1971 911S, 2.7RS spec MFI engine, suspension mods, lightened
Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance
Old 03-09-2010, 03:38 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #36 (permalink)
Registered
 
cameron.arnott's Avatar
 
Join Date: Jun 2006
Location: Adelaide Australia
Posts: 886
Trees? What trees..?

Edit: oh those trees! Couldn't remember seeing any
__________________
'74 RS 3.0 Replica
Porsche 968 Clubsport SOLD
'70 911E Bahia Red SOLD
'71 911 S/T Replica 2.3 Twin plug BEAST SOLD

Last edited by cameron.arnott; 03-09-2010 at 06:10 PM..
Old 03-09-2010, 03:39 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #37 (permalink)
Registered
 
tadd's Avatar
 
Join Date: Dec 2005
Location: Mount Airy, MD
Posts: 4,299
Is there a dyno sheet on this puppie yet? Enquiring minds!

t
__________________
1967 912 with centerlocks… 10 years and still in pieces!
Old 04-21-2010, 12:54 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #38 (permalink)
Registered
 
cameron.arnott's Avatar
 
Join Date: Jun 2006
Location: Adelaide Australia
Posts: 886
Hi Tadd

Here's the original Dyno run from the engine break in runs.

As per the other post this run was only to 7300rpm when the limiter kicked in (it was still set to the old engine spec on the MSD2 and they had thought at the time it needed a different plug in vs turning the adjuster screw!)

They had a bit of a fiddle after the 1st track day with emulsion tubes etc but had a batch of race cars to prepare and ran out of time before the car carrier collected it to bring it north to where I live. Hence no second dyno run I would like to spend some more time getting it perfect but there is not a heap of talented Porsche mechanics where I live.......

There are still some surging issues on the idle circuit, particularly when cold but it pulls like a steam train, and has loosened up a little from the beginning.

I'm guessing 220-225 at the crank at peak HP. Rev limiter is set at 8000.

Cheers
__________________
'74 RS 3.0 Replica
Porsche 968 Clubsport SOLD
'70 911E Bahia Red SOLD
'71 911 S/T Replica 2.3 Twin plug BEAST SOLD
Old 04-21-2010, 03:15 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #39 (permalink)
Registered
 
cameron.arnott's Avatar
 
Join Date: Jun 2006
Location: Adelaide Australia
Posts: 886
Sorry now attached.....


__________________
'74 RS 3.0 Replica
Porsche 968 Clubsport SOLD
'70 911E Bahia Red SOLD
'71 911 S/T Replica 2.3 Twin plug BEAST SOLD
Old 04-21-2010, 03:25 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #40 (permalink)
Reply


 


All times are GMT -8. The time now is 09:15 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2025 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.