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
> x-faktory T4, 1911 T4 with EFI/ITBs
x-faktory
post Jan 26 2021, 02:19 PM
Post #1


Newbie
*

Group: Members
Posts: 21
Joined: 16-August 13
From: PNW
Member No.: 16,261
Region Association: Pacific Northwest
Some of you may be aware of my 911 engine builds, but...I've decided on building a T4-1911.....I was quickly going down the rabbit hole with bigger/better, but then reminded myself of one of the primary goals......and that is to help configure the RHD T'body design that I am using on the 911 builds... to be used for the 4 cylinder engines...starting with the Type 4. Parts are arriving and here is a sneak peek at the 1st units, mounted to manifolds.......


Attached Image


Stay tuned as parts for the build are arriving daily

regards,
al
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Aerostatwv
post Jan 26 2021, 02:24 PM
Post #2


Member
**

Group: Members
Posts: 116
Joined: 13-July 11
From: WV
Member No.: 13,315
Region Association: MidAtlantic Region
Watching. Thanks!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
AfricanHijinx
post Jan 26 2021, 02:26 PM
Post #3


Member
**

Group: Members
Posts: 132
Joined: 12-April 11
From: Snohomish WA
Member No.: 12,928
Region Association: Pacific Northwest
those look great
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
x-faktory
post Jan 26 2021, 02:30 PM
Post #4


Newbie
*

Group: Members
Posts: 21
Joined: 16-August 13
From: PNW
Member No.: 16,261
Region Association: Pacific Northwest
These should work great too....i've been using the RHD on 911 projects with much success. This is the 1st T4, but should work equally well.

regards,
al
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
JamesM
post Jan 26 2021, 02:34 PM
Post #5


Senior Member
***

Group: Members
Posts: 1,888
Joined: 6-April 06
From: Kearns, UT
Member No.: 5,834
Region Association: Intermountain Region
(IMG:style_emoticons/default/popcorn[1].gif) (IMG:style_emoticons/default/popcorn[1].gif) (IMG:style_emoticons/default/popcorn[1].gif)

Curious to hear all the specifics!

For starters, which ITBs are you using? What diameter?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
jd74914
post Jan 26 2021, 02:57 PM
Post #6


Its alive
****

Group: Members
Posts: 4,776
Joined: 16-February 04
From: CT
Member No.: 1,659
Region Association: North East States
(IMG:style_emoticons/default/agree.gif)

Looking forward to seeing details too!

Looks like they are from RHD Engineering in AU ( https://racehead.com.au/product-category/throttle-bodies/ )
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
rhodyguy
post Jan 26 2021, 03:40 PM
Post #7


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

Group: Members
Posts: 22,060
Joined: 2-March 03
From: Orion's Bell. The BELL!
Member No.: 378
Region Association: Galt's Gulch
Bodies and tall Vstacks look very similar to the BMW 10 kit too. Except for the intakes. Not so sure you could run them with the rain tray in place. It could be a little spendy all in.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
x-faktory
post Jan 26 2021, 04:22 PM
Post #8


Newbie
*

Group: Members
Posts: 21
Joined: 16-August 13
From: PNW
Member No.: 16,261
Region Association: Pacific Northwest
Yes, as stated in the initial post, these are made by RHD. I worked with them a couple of years ago to configure their design for the 911 engine,,,and that turned out very well....now i am working with them to configure for the Type 4, and then the 1,2,3.
These particular units are the very 1st made to work with these manifolds...it required RHD (Rama) to design some custom brackets to ensure that the linkage crossbar would clear, etc....but these are looking good. They are 42mm and will be used on a 1911 build....mild hot rod 914 engine with 1.8 heads, Kerry Hunter headers, Microsquirt etc....my 1st Type 4 build, so bear with me....

If too tall, the bottom spacer can be removed.........
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
JmuRiz
post Jan 27 2021, 12:17 PM
Post #9


914 Guru
*****

Group: Members
Posts: 5,423
Joined: 30-December 02
From: NoVA
Member No.: 50
Region Association: MidAtlantic Region
Very cool, do you already have the parts or can you bump it to a 2056? That combo with tuned EFI would be a blast.

I'm still trying to justify the price for one of your systems on my 2.7 build...
User is online!Profile CardPM
Go to the top of the page
+Quote Post
Mark Henry
post Jan 27 2021, 12:22 PM
Post #10


that's what I do!
***************

Group: Members
Posts: 20,065
Joined: 27-December 02
From: Port Hope, Ontario
Member No.: 26
Region Association: Canada
Looks a lot like the motorcycle TB's I made.
(IMG:http://www.914world.com/bbs2/uploads/post-26-1385084470_thumb.jpg)
(IMG:http://www.914world.com/bbs2/uploads/post-26-1385084492.jpg)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
pete000
post Jan 27 2021, 06:32 PM
Post #11


Senior Member
***

Group: Members
Posts: 1,885
Joined: 23-August 10
From: Bradenton Florida
Member No.: 12,094
Region Association: South East States
Always wanted to go this route on my 914-4...
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
racerbvd
post Jan 27 2021, 06:38 PM
Post #12


Advanced Member
****

Group: Members
Posts: 2,368
Joined: 3-February 03
From: Sunny FL.
Member No.: 226
Region Association: None
(IMG:style_emoticons/default/beerchug.gif) (IMG:style_emoticons/default/beerchug.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
rktmn247
post Jan 27 2021, 08:39 PM
Post #13


Irish Green with GT envy!
**

Group: Members
Posts: 347
Joined: 18-August 05
From: Mililani, HI
Member No.: 4,612
Region Association: None
Welcome X-factory! Glad to see you posting here. I have followed your posts on pelican and am really looking forward to this build.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Shivers
post Jan 27 2021, 09:05 PM
Post #14


Senior Member
****

Group: Members
Posts: 2,347
Joined: 19-October 20
From: La Quinta, CA
Member No.: 24,781
Region Association: Southern California
42mm, big for a 1911, really curious to see how it will run when it's done.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
TRS63
post Jan 28 2021, 02:51 AM
Post #15


Member
**

Group: Members
Posts: 313
Joined: 14-September 20
From: Germany - Stuttgart
Member No.: 24,690
Region Association: Europe
That is really interesting, as this is exactly the way I have in mind for mine! Keep us updated!

Antoine
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mark Henry
post Jan 28 2021, 07:21 AM
Post #16


that's what I do!
***************

Group: Members
Posts: 20,065
Joined: 27-December 02
From: Port Hope, Ontario
Member No.: 26
Region Association: Canada
QUOTE(x-faktory @ Jan 26 2021, 03:19 PM) *


Attached Image


Stay tuned as parts for the build are arriving daily

regards,
al

Those TB's are awfully tall and you still have to add some kind of air filter. You will lose the raintray so you might want rainhats, you dont want this sticking out the lid. Not trying to be a Debbie downer, just saying you need to trial fit the TB assembly in your 914.
I can tell you right now that it will not fit a VW beetle T4 conversion, my ITB set up barely fit in my bug.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
barefoot
post Jan 28 2021, 08:00 AM
Post #17


Senior Member
***

Group: Members
Posts: 1,269
Joined: 19-March 13
From: Charleston SC
Member No.: 15,673
Region Association: South East States
QUOTE(Shivers @ Jan 27 2021, 10:05 PM) *

42mm, big for a 1911, really curious to see how it will run when it's done.


For carb's yes, for FI should not matter at all as fuel delivery is independent of throat size.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mark Henry
post Jan 28 2021, 10:26 AM
Post #18


that's what I do!
***************

Group: Members
Posts: 20,065
Joined: 27-December 02
From: Port Hope, Ontario
Member No.: 26
Region Association: Canada
QUOTE(barefoot @ Jan 28 2021, 09:00 AM) *

QUOTE(Shivers @ Jan 27 2021, 10:05 PM) *

42mm, big for a 1911, really curious to see how it will run when it's done.


For carb's yes, for FI should not matter at all as fuel delivery is independent of throat size.


Yes...but...too big and you make vacuum issues worse, add a big duration cam and you're running in alphaN/TPS only.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
JamesM
post Jan 28 2021, 10:48 AM
Post #19


Senior Member
***

Group: Members
Posts: 1,888
Joined: 6-April 06
From: Kearns, UT
Member No.: 5,834
Region Association: Intermountain Region
QUOTE(Mark Henry @ Jan 28 2021, 09:26 AM) *

QUOTE(barefoot @ Jan 28 2021, 09:00 AM) *

QUOTE(Shivers @ Jan 27 2021, 10:05 PM) *

42mm, big for a 1911, really curious to see how it will run when it's done.


For carb's yes, for FI should not matter at all as fuel delivery is independent of throat size.


Yes...but...too big and you make vacuum issues worse, add a big duration cam and you're running in alphaN/TPS only.


(IMG:style_emoticons/default/agree.gif)

Might as well cam the hell out of it as you are most likely going to have very little resolution with the vacuum signal and have to run alphaN anyways Ran 42mm Jenveys on a 2270 with a cam optimized for lower RPM/very good vacuum and was still seeing 0 vacuum at roughly 30% throttle off idle . They were a pretty good match for that motor, running in MS hybrid mode split the map almost 50/50. Running on a 1911 I wouldn't be surprised if you wind up seeing no vacuum across 70%+ of operating conditions.
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: 25th April 2024 - 12:00 PM
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 ...