Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

 
 Reply to this topicStart new topic
> Just dynoed my dads 912e, with Raby 2056 kit
bam914
post Sep 21 2006, 10:57 AM
Post #1


Member
**

Group: Members
Posts: 334
Joined: 23-November 03
From: Atlanta, Ga
Member No.: 1,378
Region Association: None
It made 106whp and 125ft/tg. with 40mm webers w/36mm chokes stock heat exchangers with a Bursch muffler.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Aaron Cox
post Sep 21 2006, 11:00 AM
Post #2


Professional Lawn Dart
***************

Group: Retired Admin
Posts: 24,541
Joined: 1-February 03
From: OC
Member No.: 219
Region Association: Southern California
think you would pick up some more HP with a 34mm vent?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
brant
post Sep 21 2006, 11:10 AM
Post #3


914 Wizard
**********

Group: Members
Posts: 11,625
Joined: 30-December 02
From: Colorado
Member No.: 47
Region Association: Rocky Mountains
Usually bigger vents are more hp...
(they hurt driveability and midrange, but they show bigger numbers at redline)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
TravisNeff
post Sep 21 2006, 11:18 AM
Post #4


914 Guru
*****

Group: Members
Posts: 5,082
Joined: 20-March 03
From: Mesa, AZ
Member No.: 447
Region Association: Southwest Region
With a 15% drivetrain loss that is 122HP and 144ft lbs at the crank. Impressive. (IMG:style_emoticons/default/burnout.gif)

I am assuming the 15% loss is HP AND torque ?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Jake Raby
post Sep 21 2006, 11:49 AM
Post #5


Engine Surgeon
*****

Group: Members
Posts: 9,394
Joined: 31-August 03
From: Lost
Member No.: 1,095
Region Association: South East States
Thats spot on with what that kit made when it was designed with 40mm Webers.. I think 34 vents would make more power by a couple percent..

here is what I advertise that kit at..
(IMG:http://www.aircooledtechnology.com/vw_2056dyno.jpg)
Not bad! and it looks like my projections are spot on at the flywheel!

Considering a stock 912E engine made 76HP at the flywheel this 2056 kit is making a 40+% increase in power over stock. Not bad for a 2mm overbore, a cam and a tad of head work..
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Brian Mifsud
post Sep 21 2006, 11:51 AM
Post #6


Mechanical Engineer
***

Group: Members
Posts: 981
Joined: 3-March 03
From: Penngrove, CA
Member No.: 384
Region Association: None
QUOTE(Travis Neff @ Sep 21 2006, 10:18 AM) *

With a 15% drivetrain loss that is 122HP and 144ft lbs at the crank. Impressive. (IMG:style_emoticons/default/burnout.gif)

I am assuming the 15% loss is HP AND torque ?


1 HP per Cubic Inch is all I ask. @ 60 cubic inches to the liter, that engine has a nice power to displacement ratio. I wonder how much gas it chews up doing so which tells much about efficiency. Any idea on the mixture.. is this a rich running engine?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
grantsfo
post Sep 21 2006, 11:58 AM
Post #7


Arrrrhhhh!
****

Group: Members
Posts: 4,327
Joined: 16-March 03
Member No.: 433
Region Association: None
QUOTE(bam914 @ Sep 21 2006, 09:57 AM) *

It made 106whp and 125ft/tg. with 40mm webers w/36mm chokes stock heat exchangers with a Bursch muffler.


At what RPM did it make those numbers?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Jake Raby
post Sep 21 2006, 12:32 PM
Post #8


Engine Surgeon
*****

Group: Members
Posts: 9,394
Joined: 31-August 03
From: Lost
Member No.: 1,095
Region Association: South East States
The engine in my 912E is exacting the one in the graphs.. I have gotten a best of 40 MPG with it when it had about 40K miles on it. even after 23K miles on the same oil change and now with 106K on the engine in 4 years it still gets 32MPG or so. It hasn't had a tune up in two years and the last valve adjustment was in February of 2003.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
bam914
post Sep 21 2006, 01:06 PM
Post #9


Member
**

Group: Members
Posts: 334
Joined: 23-November 03
From: Atlanta, Ga
Member No.: 1,378
Region Association: None
Peak torgue is at 3800 and peak hp is at 5000. I think it does have 34mm chokes in it.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
ChrisFoley
post Sep 21 2006, 02:23 PM
Post #10


I am Tangerine Racing
*****

Group: Members
Posts: 7,927
Joined: 29-January 03
From: Bolton, CT
Member No.: 209
Region Association: None
36mm vents are not generally available for 40IDFs. I have them custom made, or they can be turned down from 44IDF vents.
User is online!Profile CardPM
Go to the top of the page
+Quote Post
Al Meredith
post Sep 21 2006, 08:39 PM
Post #11


Senior Member
***

Group: Members
Posts: 960
Joined: 4-November 04
From: Atlanta, ga
Member No.: 3,061
QUOTE(Racer Chris @ Sep 21 2006, 01:23 PM) *

36mm vents are not generally available for 40IDFs. I have them custom made, or they can be turned down from 44IDF vents.




I'm not sure , Jake gave me some 32 MM chokes and although we didn't use them, Blake bores out the old ones to, I Think the same . I'll check this weekend and report. If they are 32's then I'll order some 34's and try them.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
bam914
post Sep 22 2006, 03:06 PM
Post #12


Member
**

Group: Members
Posts: 334
Joined: 23-November 03
From: Atlanta, Ga
Member No.: 1,378
Region Association: None
Heres the dyno sheet Attached File  dyno.pdf ( 25.27k ) Number of downloads: 194
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
rhodyguy
post Sep 22 2006, 04:21 PM
Post #13


Chimp Sanctuary NW. Check it out.
***************

Group: Members
Posts: 22,081
Joined: 2-March 03
From: Orion's Bell. The BELL!
Member No.: 378
Region Association: Galt's Gulch
i can never get the pdf files to work. i'd like to see the torque curve. odd that the hp must fall off @5k. i should think it would have longer legs. which cam and flavor of heads?. nice tho. bet it has lots of back-o-the seat grunt to that 5k number.

k
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
anthony
post Sep 22 2006, 05:31 PM
Post #14


2270 club
****

Group: Benefactors
Posts: 3,107
Joined: 1-February 03
From: SF Bay Area, CA
Member No.: 218
I can never get the PDF's to work either. Is it an IE only feature?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
anthony
post Sep 22 2006, 05:33 PM
Post #15


2270 club
****

Group: Benefactors
Posts: 3,107
Joined: 1-February 03
From: SF Bay Area, CA
Member No.: 218
I just tried getting the pdf with IE and it crashed. With Firefox nothing happens.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
mightyohm
post Sep 22 2006, 06:29 PM
Post #16


Advanced Member
****

Group: Benefactors
Posts: 2,277
Joined: 16-January 03
From: Seattle, WA
Member No.: 162
Region Association: Pacific Northwest
Jake, What AFR do you run to get those 40 mpg numbers?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
904svo
post Sep 22 2006, 09:17 PM
Post #17


904SVO
***

Group: Members
Posts: 1,118
Joined: 17-November 05
From: Woodstock,Georgia
Member No.: 5,146
QUOTE(bam914 @ Sep 22 2006, 01:06 PM) *

Heres the dyno sheet Attached File  dyno.pdf ( 25.27k ) Number of downloads: 194



Try saving the .pdf file, My system also has problems trying to open .pdf
files, this is the only way I found that would work.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Standard · Switch to: Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 21st May 2024 - 05:07 AM
Invision Power Board v9.1.4 © 2024  IPS, Inc.
All rights reserved 914World.com © since 2002
914World.com is the fastest growing online 914 community!
We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ...