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 / 930 Turbo & Super Charging Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Wer bremst verliert
 
JohnJL's Avatar
 
Join Date: Jan 2005
Location: Toronto, Ontario
Posts: 4,729
Fabrication project: Removeable engine mount

In order to get the engine in and out, I've had to take the supercharger and intercooler in and out while the motor is in the car. Its a royal pain, even with the removable seat, rear windscreen and tail. Its very difficult to get an arm in on the left side to adjust and tighten the supercharger turnbuckle stays with the motor in place.

I devised a way to put the whole motor/trans/intercooler assembly together on the rolling bench, roll it under the car on the lift, and drop the car down on the motor.

The problem before was the supercharger bracket plate fouled the left rear engine mount. I had to put the motor in place and then install the plate. THis made it very difficult to get everything aligned and tightened.

I ground off the old mount and fabricated this one. I've only done a few brackets and things before so my measuring, cutting and welding takes 3x as long and still isn't perfect, but its functional. Now I can put a camber gage on the nose of the supercharger, and one on the crank and adjust everything on the bench so its perfectly aligned, drop the car on the motor/trans and bolt the new motor bracket in place.







__________________
2007 911 Turbo - Not a toy
1985 911 Cab - Wife's toy
1982 911 3.2 Indiash Rot Track Supercharged track toy
1978 911 3.0 Lichtbau toy "Gretchen"
1971 911 Targa S backroad toy
Old 03-02-2014, 07:23 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Wer bremst verliert
 
JohnJL's Avatar
 
Join Date: Jan 2005
Location: Toronto, Ontario
Posts: 4,729
Some shots of the 123 side of the motor. you can see you it would be difficult to install and tighten everything in situ. Even changing the 123 plugs with the engine tin in place is pretty much impossible. Now its easy.







__________________
2007 911 Turbo - Not a toy
1985 911 Cab - Wife's toy
1982 911 3.2 Indiash Rot Track Supercharged track toy
1978 911 3.0 Lichtbau toy "Gretchen"
1971 911 Targa S backroad toy
Old 03-02-2014, 10:22 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered User
 
lite75's Avatar
 
Join Date: Jan 2007
Location: Bellingham WA
Posts: 913
Garage
Is the boost pressure produced just regulated by the RPM of the blower?
__________________
75 930, 76 930, 83 SC EFI turbo
Old 03-02-2014, 11:34 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Wer bremst verliert
 
JohnJL's Avatar
 
Join Date: Jan 2005
Location: Toronto, Ontario
Posts: 4,729
Basically, yes. I have a bypass valve plumbed in after the blower, that valve is actuated by a vacuum connection behind the throttle valve. When I lift off, excess pressure is recirculated after the throttle plate to keep it from spiking or pulling the throttle plate in.

You essentially set your boost with the pulley ratio between the crank and the blower pulley. In my case I experimented with a bunch until I got 13psi at 6200 rpm. I've since had the heads ported out with bigger valves and cams so lets see what happens next...
__________________
2007 911 Turbo - Not a toy
1985 911 Cab - Wife's toy
1982 911 3.2 Indiash Rot Track Supercharged track toy
1978 911 3.0 Lichtbau toy "Gretchen"
1971 911 Targa S backroad toy
Old 03-02-2014, 02:21 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Wer bremst verliert
 
JohnJL's Avatar
 
Join Date: Jan 2005
Location: Toronto, Ontario
Posts: 4,729
Its pretty tight in there but not I can get to everything.






__________________
2007 911 Turbo - Not a toy
1985 911 Cab - Wife's toy
1982 911 3.2 Indiash Rot Track Supercharged track toy
1978 911 3.0 Lichtbau toy "Gretchen"
1971 911 Targa S backroad toy
Old 03-02-2014, 02:33 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
Posts: 8,844
Very cool. Ever dyno'd with Whipple? I assume it's Whipple?
Old 03-02-2014, 02:42 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Wer bremst verliert
 
JohnJL's Avatar
 
Join Date: Jan 2005
Location: Toronto, Ontario
Posts: 4,729
Quote:
Originally Posted by Tippy View Post
Very cool. Ever dyno'd with Whipple? I assume it's Whipple?
No, its a twin-screw lysholm. Autorotor 420. I was getting ~340 ft-lbs and 350 hp at the wheels before the porting work
__________________
2007 911 Turbo - Not a toy
1985 911 Cab - Wife's toy
1982 911 3.2 Indiash Rot Track Supercharged track toy
1978 911 3.0 Lichtbau toy "Gretchen"
1971 911 Targa S backroad toy
Old 03-02-2014, 02:51 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
Posts: 8,844
Ah, very nice. Bet it's a torque monster at low RPM!
Old 03-02-2014, 03:05 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Wer bremst verliert
 
JohnJL's Avatar
 
Join Date: Jan 2005
Location: Toronto, Ontario
Posts: 4,729
spins the slicks in 3 rd gear but im interested in seeing what its like in 4th gear.

as you know well, boost is addictive.

im sorting other issues now. brakes and suspension are well up to the task now, besides the new heads and brackets, im also dealing with some aero imbalance and fuel starvation issues.

the tail is a blessing in disguise. even in the low angle config, the nose feels light at anything over 100mph. not surprising since i have 64% over the rear wheels. so im finally building a mockup front spoiler or dam, pick your term.

the fuel system deserves special mention. i melted the 1, 3, 4 and 6 pistons. 2 and 5 were not far behind. i had fuel starvation issues at the hairpin at Cayuga and just ignored the sputtering. my mistake.

i am now in the process of installing a surge tank and a second a1000 pump. fuel starvation shpuld never a problem again.
__________________
2007 911 Turbo - Not a toy
1985 911 Cab - Wife's toy
1982 911 3.2 Indiash Rot Track Supercharged track toy
1978 911 3.0 Lichtbau toy "Gretchen"
1971 911 Targa S backroad toy
Old 03-02-2014, 08:02 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
Wer bremst verliert
 
JohnJL's Avatar
 
Join Date: Jan 2005
Location: Toronto, Ontario
Posts: 4,729
and i love your car Tippy, so thanks for the interest.
__________________
2007 911 Turbo - Not a toy
1985 911 Cab - Wife's toy
1982 911 3.2 Indiash Rot Track Supercharged track toy
1978 911 3.0 Lichtbau toy "Gretchen"
1971 911 Targa S backroad toy
Old 03-02-2014, 08:08 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
Posts: 8,844
Thanks. I love turbos but really like it when folks like you do something other than the norm and get to hear the results.
Old 03-02-2014, 09:12 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)
Registered User
 
DSPTurtle's Avatar
 
Join Date: Jul 2001
Location: Suntree, Florida, USA
Posts: 2,263
That's hot. I love the ingenuity on here!
Old 03-02-2014, 09:18 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #12 (permalink)
 
Wer bremst verliert
 
JohnJL's Avatar
 
Join Date: Jan 2005
Location: Toronto, Ontario
Posts: 4,729
Quote:
Originally Posted by DSPTurtle View Post
That's hot. I love the ingenuity on here!
Thanks. That's "ENGInuity!"
__________________
2007 911 Turbo - Not a toy
1985 911 Cab - Wife's toy
1982 911 3.2 Indiash Rot Track Supercharged track toy
1978 911 3.0 Lichtbau toy "Gretchen"
1971 911 Targa S backroad toy
Old 03-03-2014, 07:23 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #13 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 05:00 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 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.