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 )

13 Pages V « < 10 11 12 13 >  
 Reply to this topicStart new topic
> 1971 Gold Metallic Project, The Turbo 1.7
McMark
post Jan 19 2015, 11:00 PM
Post #221


914 Freak!
***************

Group: Retired Admin
Posts: 20,179
Joined: 13-March 03
From: Grand Rapids, MI
Member No.: 419
Region Association: None
Drove it home tonight but didn't find the magic boost. (IMG:style_emoticons/default/sad.gif) time to look at waste gate control. I know from my undercar video that the waste gate is opening quickly.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
edwin
post Jan 20 2015, 02:35 AM
Post #222


Member
**

Group: Members
Posts: 321
Joined: 20-May 09
From: Australia
Member No.: 10,384
Region Association: Australia and New Zealand
Easy way to check how quickly and what levels are possible is to quickly pull the wastegate line off. What are you doing for a boost controller? I assume a Mac style solenoid and pwm from the microsquirt?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
McMark
post Jan 21 2015, 12:55 AM
Post #223


914 Freak!
***************

Group: Retired Admin
Posts: 20,179
Joined: 13-March 03
From: Grand Rapids, MI
Member No.: 419
Region Association: None
Right now it's just the built in waste gate. This is a Chinese knockoff KKK so I expect the wastegate is the weak point. Looking at the turbo smart adjustable controller (bleed off style). But I just realized maybe I should install the real KKK turbo I got from Mike. (IMG:style_emoticons/default/idea.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
edwin
post Jan 21 2015, 02:04 AM
Post #224


Member
**

Group: Members
Posts: 321
Joined: 20-May 09
From: Australia
Member No.: 10,384
Region Association: Australia and New Zealand
The wastegate settings on the turbos would be the same I expect.
Turbosmart bleed valve is an easy fix or if you have a spare pwm channel on the microsquirt then use that and a boost solenoid for the best control.
Do yourself a favour and just unplug the wastegate and plug the boost line. Go for a drive and watch the boost. Just remember the only think limiting the boost will be your foot.
Only do this for testing.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mueller
post Jan 21 2015, 12:25 PM
Post #225


914 Freak!
***************

Group: Members
Posts: 17,150
Joined: 4-January 03
From: Antioch, CA
Member No.: 87
Region Association: None
Mark,

What you do differently if you had to start from scratch?

The '73 I am getting that has the bad motor supposedly has a Kerry Hunter header on it...hmmmm, and it already has a megasquirt on it....
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
McMark
post Jan 21 2015, 11:28 PM
Post #226


914 Freak!
***************

Group: Retired Admin
Posts: 20,179
Joined: 13-March 03
From: Grand Rapids, MI
Member No.: 419
Region Association: None
I don't think I would do anything differently. It's been great for a long time now, and I enjoy it every time I get in. It's a long slow learning process, but so far the minor changes I have made here and there haven't made much difference. So there haven't been any big mistakes to correct. (IMG:style_emoticons/default/wink.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
falcor75
post Mar 4 2015, 12:58 AM
Post #227


Senior Member
***

Group: Members
Posts: 1,579
Joined: 22-November 12
From: Sweden
Member No.: 15,176
Region Association: Scandinavia
Loved reading thru your thread, can you post some pictures of your coil setup?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
McMark
post May 24 2015, 08:15 PM
Post #228


914 Freak!
***************

Group: Retired Admin
Posts: 20,179
Joined: 13-March 03
From: Grand Rapids, MI
Member No.: 419
Region Association: None
Installed the high amp alternator today. Laughably, I did that whole upgrade mostly because I was seeing a lot a variation in battery voltage (via the MicroSquirt logs). But the alternator wasn't the problem. Tried a different battery. That wasn't the problem either. Started checking the relay board, pulled and reinstalled the fuel injection connector, and all went back to normal. So I did all this work and it was just a corroded connector after all. (IMG:style_emoticons/default/laugh.gif)

I also resealed my exhaust.... Hallelujah! Btw, I never 'got' the tip about annealing the copper exhaust gaskets, until this time. Holy crap, I should have listened to everyone a LONG time ago. So much nicer. So much quieter.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
rick 918-S
post May 24 2015, 10:27 PM
Post #229


Hey nice rack! -Celette
***************

Group: Members
Posts: 20,826
Joined: 30-December 02
From: Now in Superior WI
Member No.: 43
Region Association: Northstar Region
Can't blame you for doing the upgrade. I have similar symptoms showing on the factory gauge. Very annoying. Glad you found the real issue.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Aircooledfool
post May 25 2015, 05:41 PM
Post #230


Member
**

Group: Members
Posts: 106
Joined: 17-September 06
From: Texas
Member No.: 6,858
Region Association: None
This may have been asked already, do you plan to offer this type of setup to the public?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
McMark
post May 25 2015, 06:47 PM
Post #231


914 Freak!
***************

Group: Retired Admin
Posts: 20,179
Joined: 13-March 03
From: Grand Rapids, MI
Member No.: 419
Region Association: None
Never as a loose collection of 'bolt on' parts. I'd be happy to build a setup for someone, but it would be build-to-order and also dependent on the rest of my work load. You have to get the fuel injection and that's around $3k, the turbo and exhaust fab work would be another $2000-2500. If anyone is interested, they can PM me.

Just realized maybe you're talking about the alternator setup. Same caveat, but the price is more reasonable. (IMG:style_emoticons/default/biggrin.gif) The alternator itself is in the $300 range, plus shop rate for making the modifications to the unit, which would be in the $200 range.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
ConeDodger
post May 25 2015, 07:37 PM
Post #232


Apex killer!
***************

Group: Members
Posts: 23,853
Joined: 31-December 04
From: Tahoe Area
Member No.: 3,380
Region Association: Northern California
Mark,
As far as the turbo is concerned, I think you've proven the concept. Let's build a new engine and bolt on the turbo. That way you can customize the cam grind, get heads that work really well with boost...
I can come down for build days! (IMG:style_emoticons/default/rolleyes.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
nine9three
post May 26 2015, 04:09 PM
Post #233


Member
**

Group: Members
Posts: 142
Joined: 29-December 11
From: Oregon
Member No.: 13,946
Region Association: Pacific Northwest
I've enjoyed reading this thread. Seems to me that a well designed turbo system would find a home among many on this board. My only issue is the cost. It would seem to me that the easiest way to control some those costs would be to keep as much of the original system as possible (D-jet/L-Jet). I'm not sure how boost effects the MPS or if it's necessary to use alternative injection systems. When I had a 930, which was K-jet, I placed an Andial unit on the intake which activated the cold start valve for boost cycles. Could this be done? Andial is not around any longer but would something like this work?: http://1jzmerc.com/hks-faq/accessories/hks-aic

Basically cheers on you mate for wetting our appetite but find a way to make this work economically so I can forget about the 2270. Wait a minute? Don't you have a separate thread on "engine choices"? (IMG:style_emoticons/default/poke.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
McMark
post Oct 17 2016, 07:22 AM
Post #234


914 Freak!
***************

Group: Retired Admin
Posts: 20,179
Joined: 13-March 03
From: Grand Rapids, MI
Member No.: 419
Region Association: None
Now that I finally have room in the shop for my car I made up a work list for the next few months. This is phase 1. (IMG:style_emoticons/default/happy11.gif)


Attached thumbnail(s)
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mueller
post Oct 17 2016, 08:09 AM
Post #235


914 Freak!
***************

Group: Members
Posts: 17,150
Joined: 4-January 03
From: Antioch, CA
Member No.: 87
Region Association: None
QUOTE(McMark @ Oct 17 2016, 06:22 AM) *

Now that I finally have room in the shop for my car I made up a work list for the next few months. This is phase 1. (IMG:style_emoticons/default/happy11.gif)



Everyone knows you cannot sell a turbo Type IV engine (IMG:style_emoticons/default/smile.gif) (IMG:style_emoticons/default/poke.gif)

Congrats on the progress!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
rtalich
post Oct 17 2016, 09:13 AM
Post #236


Member
**

Group: Members
Posts: 279
Joined: 25-September 06
From: Bellevue, WA
Member No.: 6,913
Region Association: None
QUOTE(Mueller @ Oct 17 2016, 07:09 AM) *

QUOTE(McMark @ Oct 17 2016, 06:22 AM) *

Now that I finally have room in the shop for my car I made up a work list for the next few months. This is phase 1. (IMG:style_emoticons/default/happy11.gif)



Everyone knows you cannot sell a turbo Type IV engine (IMG:style_emoticons/default/smile.gif) (IMG:style_emoticons/default/poke.gif)

Congrats on the progress!


True that!!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
djb
post Jun 2 2018, 04:17 PM
Post #237


Newbie
*

Group: Members
Posts: 7
Joined: 2-November 17
From: El Dorado
Member No.: 21,566
Region Association: Northern California
Great thread! Probably the best Turbo 914 thread on the web, thanks for documenting it.

I have a 75 914 1.8 that I am seriously considering doing a Turbo conversion. What would you say a safe level of boost and approx power a stock 1.7 or 1.8 street engine can support and be reasonably reliable without abusing it?

Im familiar with setting up and tuning stand alone FI systems, just not clear on what the stock engine will support when tuned properly/safely.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
ConeDodger
post Jun 2 2018, 04:38 PM
Post #238


Apex killer!
***************

Group: Members
Posts: 23,853
Joined: 31-December 04
From: Tahoe Area
Member No.: 3,380
Region Association: Northern California
QUOTE(djb @ Jun 2 2018, 07:17 PM) *

Great thread! Probably the best Turbo 914 thread on the web, thanks for documenting it.

I have a 75 914 1.8 that I am seriously considering doing a Turbo conversion. What would you say a safe level of boost and approx power a stock 1.7 or 1.8 street engine can support and be reasonably reliable without abusing it?

Im familiar with setting up and tuning stand alone FI systems, just not clear on what the stock engine will support when tuned properly/safely.


8psi...
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
jim_hoyland
post Jun 2 2018, 05:25 PM
Post #239


Get that VIN ?
*****

Group: Members
Posts: 9,561
Joined: 1-May 03
From: Sunset Beach, CA
Member No.: 643
Region Association: Southern California
QUOTE(ConeDodger @ Jun 2 2018, 03:38 PM) *

QUOTE(djb @ Jun 2 2018, 07:17 PM) *

Great thread! Probably the best Turbo 914 thread on the web, thanks for documenting it.

I have a 75 914 1.8 that I am seriously considering doing a Turbo conversion. What would you say a safe level of boost and approx power a stock 1.7 or 1.8 street engine can support and be reasonably reliable without abusing it?

Im familiar with setting up and tuning stand alone FI systems, just not clear on what the stock engine will support when tuned properly/safely.


8psi...


Good question; what determines the ultimate boost ?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
mepstein
post Jun 2 2018, 05:35 PM
Post #240


914-6 GT in waiting
***************

Group: Members
Posts: 19,649
Joined: 19-September 09
From: Landenberg, PA/Wilmington, DE
Member No.: 10,825
Region Association: MidAtlantic Region
QUOTE(jim_hoyland @ Jun 2 2018, 07:25 PM) *

QUOTE(ConeDodger @ Jun 2 2018, 03:38 PM) *

QUOTE(djb @ Jun 2 2018, 07:17 PM) *

Great thread! Probably the best Turbo 914 thread on the web, thanks for documenting it.

I have a 75 914 1.8 that I am seriously considering doing a Turbo conversion. What would you say a safe level of boost and approx power a stock 1.7 or 1.8 street engine can support and be reasonably reliable without abusing it?

Im familiar with setting up and tuning stand alone FI systems, just not clear on what the stock engine will support when tuned properly/safely.


8psi...


Good question; what determines the ultimate boost ?

Crank it up until it blows and then you know to go a little less.
User is online!Profile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

13 Pages V « < 10 11 12 13 >
Reply to this topicStart new topic
28 User(s) are reading this topic (28 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: 27th December 2024 - 12:43 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 ...