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> Staring down the EFI rabbit hole again, /6 intake design, Which way around for the 964 plenums in a 914?
ClayPerrine
post Mar 16 2021, 06:49 AM
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QUOTE(Mark Henry @ Mar 16 2021, 07:45 AM) *

My 964 intake halves arrived last night.

I have to figure out the the stubs and center section details, might take a while as I'm super busy restoring 2.0 Djet engines plus other projects this spring/summer. We'll see how much energy I have left over on the weekends.

The SDS EFI install itself only takes a weekend, it's the crank trigger and intake that sucks up the time.
I could buy off the shelf... but where's the fun in that? (IMG:style_emoticons/default/biggrin.gif)


Do you need the stubs, injectors and fuel rails? I have 2 spare sets. I actually pulled out a set for you when I was looking for the manifolds.

Clay
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Mark Henry
post Mar 16 2021, 07:00 AM
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Question. Does the the 3.2 up intake to ports use phenolic spacers? How thick?

I have 1/4" phenolic spacers under my Weber manifolds and I still have the jigs and material to make another set.
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Mark Henry
post Mar 16 2021, 07:05 AM
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QUOTE(ClayPerrine @ Mar 16 2021, 08:49 AM) *

Do you need the stubs, injectors and fuel rails? I have 2 spare sets. I actually pulled out a set for you when I was looking for the manifolds.

Clay



Hi Clay (IMG:style_emoticons/default/smile.gif)
Thank you, yes I'll take them, I'll PM you my contact details.

I don't really need the injectors as I have the almost new set that came with my EFI system.
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ClayPerrine
post Mar 16 2021, 07:16 AM
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QUOTE(Mark Henry @ Mar 16 2021, 08:05 AM) *

QUOTE(ClayPerrine @ Mar 16 2021, 08:49 AM) *

Do you need the stubs, injectors and fuel rails? I have 2 spare sets. I actually pulled out a set for you when I was looking for the manifolds.

Clay



Hi Clay (IMG:style_emoticons/default/smile.gif)
Thank you, yes I'll take them, I'll PM you my contact details.

I don't really need the injectors as I have the almost new set that came with my EFI system.



I am going to leave them in to hold the fuel rails.

Clay
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Mark Henry
post Mar 16 2021, 07:35 AM
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Ahhh! Okay then. (IMG:style_emoticons/default/wink.gif)
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Mark Henry
post Mar 18 2021, 11:44 AM
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So I'll be making something like below, what way do I orient the plenums and TB ?

I think the pic below is for a 911, do I reverse the plenums to fit the 914?
Which way would you plumb the TB forward or to the rear?



(IMG:http://www.914world.com/bbs2/uploads_offsite/forums.pelicanparts.com-26-1614451322.1.jpg)
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Mark Henry
post Apr 24 2021, 08:56 AM
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With all the 2.0 engine work I've taken on I won't make huge progress on my FI project till this coming fall.
The reason I was in no hurry to pop off my webers and BTW I had this years first drive last night.

But....My cheap $70 (Canadian with shipping) Ali-express 70MM TB arrived from China today and it looks good enough. This is a universal TB so it doesn't have extra holes and crap. I'll have to figure out how to do the throttle cable as it looks like the wheel take standard bicycle cable ends.


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Mark Henry
post Apr 24 2021, 09:02 AM
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TPS mount doesn't line up with this bosch 3 wire TPS I have, but it fits the D shaft end. It will be easy to make a new mount plate and it will just be a bolt on mod to change the existing mount.
I'll also try a Honda TPS to see if it fits better.


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Mark Henry
post Apr 24 2021, 09:09 AM
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The huge bonus is it came with this 9/16" (1.5cm) thick mounting flange (with bolts) that I can weld to the custom center section I will making.

It has an idle stop, but no idle air bypass screw, so I'll have to crack the plate open a bit for idle or another option is to drill a hole in the throttle plate.


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Chris914n6
post Apr 24 2021, 02:08 PM
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QUOTE(Mark Henry @ Apr 24 2021, 07:56 AM) *

I'll have to figure out how to do the throttle cable as it looks like the wheel take standard bicycle cable ends.


This is what I did for mine. barrel cable end

(IMG:http://www.914world.com/bbs2/uploads_offsite/airheadparts.com-431-1619294918.1.jpg)
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Mark Henry
post Apr 24 2021, 03:14 PM
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Too big, it's the size of a bicycle cable end which is a little smaller. I might cannibalize another TB for this part.
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ClayPerrine
post Apr 24 2021, 08:16 PM
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QUOTE(Mark Henry @ Mar 18 2021, 12:44 PM) *

So I'll be making something like below, what way do I orient the plenums and TB ?

I think the pic below is for a 911, do I reverse the plenums to fit the 914?
Which way would you plumb the TB forward or to the rear?



(IMG:http://www.914world.com/bbs2/uploads_offsite/forums.pelicanparts.com-26-1614451322.1.jpg)


You can't flip the intake manifolds.. they won't fit over the fan shroud if you do. Just tilt the top one down so that it clears the engine lid with the boot on it.

I had mine reversed and the throttle body facing forward, but I found out I need to have it to the rear to get the heater blower hooked up. And a stock 914-6 cable will hook up to the factory 964 throttle body with no issues.

If you need pictures, I can take them.

Clay
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Chris914n6
post May 2 2021, 01:46 AM
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Mark Henry
post May 2 2021, 07:43 AM
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QUOTE(Chris914n6 @ May 2 2021, 03:46 AM) *

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Cool what's it off of?

I don't know if I even want to use that big wagon wheel on the China TB, it's kind of gawdy looking.
Any rate I'm too busy with other peoples projects and at the moment and my teen is running great on carbs. I took a nice country drive yesterday, woohoo!

Likely I have to pull the engine to do the trigger wheel, I have to pull the pulley to mount the trigger wheel and sensor mount, I'll adjust the valves, address a couple of minor leaks, etc.
I also have to build the center section, once I get caught up here I'll put together a 2.7 as a dummy engine or I'll just wait till my 3.0 is out.
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Chris914n6
post May 2 2021, 01:05 PM
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QUOTE(Mark Henry @ May 2 2021, 06:43 AM) *

Cool what's it off of?

It's been 2 decades but it think it was a Home Depot parts bin. Or maybe the heater flapper. Wasn't hard to find...
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