Finishing A 914-6 GT Conversion Project, Great Start, But The Devil Is In The Details! Options

[Lucky9146]

rick 918-S, made some plates he was selling to solve that coverage, or PMO has plastic spacers that would work also..


http://www.914world.com/bbs2/index.php?sho...=263516&hl=

Thanks for the info on the Alien plates. Sent him a PM but that post was from 2015 and I already ordered manifolds. (IMG:style_emoticons/default/sad.gif) Guess I should have done more checking around.

[rick 918-S]

Yup. And i think the PMO's are too tall for our cars. Maybe not but i thought i read that in one of our threads here.

Looks like you have the 36mm ports. My Alien adapters only raise the intakes 1/8" and clear the shroud. Send me your address. I will send you a set to try. If you like them you can send me a pay pal or something. (IMG:style_emoticons/default/assimilate.gif)

Nothing like a high cost solution to a low cost problem.

[Lucky9146]

Yup. And i think the PMO's are too tall for our cars. Maybe not but i thought i read that in one of our threads here.

Looks like you have the 36mm ports. My Alien adapters only raise the intakes 1/8" and clear the shroud. Send me your address. I will send you a set to try. If you like them you can send me a pay pal or something. (IMG:style_emoticons/default/assimilate.gif)

Nothing like a high cost solution to a low cost problem.

Rick
That's for sure on the high cost solution! Well actually I have the 39mm ports in the heads. Not sure why the venturi's are 36 but that Weber stuff is beyond me, I have skills and limitations. I will double check on the PMO's "too high" part. PMO actually sells 2 CIS solutions 40/38 at 3.9 in. high and 40/36/ which are 3.25 in. high and I went with the shorter one which was suppose to work with stock air cleaner

I'll PM you

[Lucky9146]

[quote name='gms' post='2521345' date='Aug 27 2017, 01:10 PM']
Yup those manifold will leak air because they don't cover the CIS injector cut out on the intake of the head.
Head


Recommended intake


PMO Manifolds received!
The original Porsche manifolds will not just bolt on CIS heads as there just isn’t the sealing surface on the manifold flange because they do not have the bump out on the flange to cover the CIS intake port scallop in the heads as gms pointed out. And they will likely crack, I’m told.

[Lucky9146]

rick 918-S, made some plates he was selling to solve that coverage, or PMO has plastic spacers that would work also..


http://www.914world.com/bbs2/index.php?sho...=263516&hl=

Thanks for the info on the Alien plates. Sent him a PM but that post was from 2015 and I already ordered manifolds. (IMG:style_emoticons/default/sad.gif) Guess I should have done more checking around.

However Rick 918-S is sending some of his Alien Plates for me to check out and they will look like this. So the jury is out for now awaiting their arrival. Thanks again sixnotfour for the tip on the Alien plates!

[Lucky9146]

Richard at PMO recommended the 40/38 “tall” manifolds. But the height concerned me at 3.9 inches as I wanted to leave myself the option to use a 914-6 air cleaner should I want to. I have heard from many that you just might get tired of the sound right behind your head or for longer drives and maybe to get my wife to ride in the car. (IMG:style_emoticons/default/smile.gif) So I elected to go with the 40/36 “short” manifolds at 3.25 inches. Sounds like I am necking it down I know, but Paul at Performance Oriented said that with the 36mm venturi’s in the carbs it should be fine.

The pictures are distorted a bit, because I was so close taking them, but you can see the height differences. Note the original manifolds are about 2.75 inches high.

Nice how the PMO have the rubber grommets in the manifold that the spark plug wires go through.




And you can clearly see the differences in flanges.

[defianty]

I'm in a similar position at the moment Lucky 9146.

I think I have the 'tall' manifolds and am concerned they're too tall to fit correctly with the rain hats I have.

http://www.914world.com/bbs2/index.php?showtopic=315580

[Lucky9146]

Heard from Rick 918-S that he does not have any 39mm Alien Plates at this time and he would have to make them. Plates are shown above and made for adapting original intake manifolds to cover the CIS scallops in the heads. Rick had offered to let me try them. Don’t want Rick to spend the time to make up something that I may not ultimately use, so I am going to proceed with the PMO CIS Standard Manifolds (often referred to as short, see previous postings) since I already have them. “Nothing like a high cost solution for a low cost problem” as Rick puts it. (IMG:style_emoticons/default/biggrin.gif)
It’s not like I can’t wait for the plates, because my progress is so darn slow, but I really was leaning toward the PMO manifolds anyway and it didn’t seem fair to Rick. Thanks again Rick for the offer!
________________________________________________________________

Now on to another time gobbler (at least in my case) is the gaskets supplied by PMO with the insulators for the intake manifolds. The good news is for the most part the insulators fit down through the engine shroud with only minor exceptions but the gaskets are far larger and require trimming.
And I thought I was just going to slap them on there! Ha! (IMG:style_emoticons/default/headbang.gif)

This may seem like such a minor thing to bring up and cover but luckily for me my engine is not installed yet for performing this operation and right now I can easily see how to trim the gaskets with the engine right in front of me. I did this with a nice sharp pair of scissors.

But for someone doing this after the engine is in, man I feel for ya.

Additionally, these gaskets seem to have a lot (and I mean a lot) of loose flaky material in the bore of the gasket that unless removed and cleaned up could easily fall into the head. I also recommend running something like an old stud through the gasket stud holes prior to installing it as there is also a lot of flaky crap in those holes that goes everywhere when you slide the gasket down the intake studs. PIA

Does Not fit through the shroud at all, and this is my original shroud.


Trimmed about this much


Comparison and all the flaky loose crap


Just the gasket in place


Insulators fit pretty well and yes that's another damn flake in the hole..... I'll get it...
Another gasket goes on top the insulator and really does not need to be trimmed but might as well as it looks kinda stupid if you don't with a big ole gasket hanging over the insulator. (IMG:style_emoticons/default/WTF.gif)

[porschetub]

[quote name='Lucky9146' date='Aug 30 2017, 04:14 AM' post='2522011']
Richard at PMO recommended the 40/38 “tall” manifolds. But the height concerned me at 3.9 inches as I wanted to leave myself the option to use a 914-6 air cleaner should I want to. I have heard from many that you just might get tired of the sound right behind your head or for longer drives and maybe to get my wife to ride in the car. (IMG:style_emoticons/default/smile.gif) So I elected to go with the 40/36 “short” manifolds at 3.25 inches. Sounds like I am necking it down I know, but Paul at Performance Oriented said that with the 36mm venturi’s in the carbs it should be fine.

quote

Read your comment about the engine noise,I went back to stock over the K&N's I had,yes I know these engines sound great but I found it kinda got a bit much for me.
Difference in sound is rather noticeable,like the idea of better air filtration due to my road condition also.
Just measured clearance @ rear bulkhead and I have around 10mm with the stock plastic one,it also appears there is plenty of room to go upwards as in your case with taller manifolds ,really can't see rain hats clearing however.
Someone mentioned it depends on what conversion engine mount you have,fair point.
Keep up the good work (IMG:style_emoticons/default/beer.gif)

[Lucky9146]

[quote name='porschetub' date='Aug 31 2017, 01:58 PM' post='2522800']
[quote name='Lucky9146' date='Aug 30 2017, 04:14 AM' post='2522011']
Richard at PMO recommended the 40/38 “tall” manifolds. But the height concerned me at 3.9 inches as I wanted to leave myself the option to use a 914-6 air cleaner should I want to. I have heard from many that you just might get tired of the sound right behind your head or for longer drives and maybe to get my wife to ride in the car. (IMG:style_emoticons/default/smile.gif) So I elected to go with the 40/36 “short” manifolds at 3.25 inches. Sounds like I am necking it down I know, but Paul at Performance Oriented said that with the 36mm venturi’s in the carbs it should be fine.

quote

Read your comment about the engine noise,I went back to stock over the K&N's I had,yes I know these engines sound great but I found it kinda got a bit much for me.
Difference in sound is rather noticeable,like the idea of better air filtration due to my road condition also.
Just measured clearance @ rear bulkhead and I have around 10mm with the stock plastic one,it also appears there is plenty of room to go upwards as in your case with taller manifolds ,really can't see rain hats clearing however.
Someone mentioned it depends on what conversion engine mount you have,fair point.
Keep up the good work (IMG:style_emoticons/default/beer.gif)

[/quote]

Porschetub, that you have stock air cleaners is yet another example and I also have a good friend who has a 6 conversion and he is done with the sound. I have driven it a couple of times and it sounds great to me but I guess it could wear on you after a while.
Like I said, I want to keep my options open. It never hurts.
As best I can tell the mount is set for stock engine height and was not done by me.
Good luck on yours as well!

[Larmo63]

I kinda want my car to sound raspy so my wife "won't" want to ride in it. She drives an Escalade, so she's already freaked out about a 914.

I usually drive in the car by myself, so I only have to please myself.

[Lucky9146]

I kinda want my car to sound raspy so my wife "won't" want to ride in it. She drives an Escalade, so she's already freaked out about a 914.

I usually drive in the car by myself, so I only have to please myself.

That's cool I get it. Who knows mine might not want to ride in it either.

Hey your car is coming right along I just was on your thread looking at your install day pics. I am hopefully not that far behind.
I may have a question or 2 for ya.
Won't have my car ready but I'll see you in Temecula.
All the best in sorting yours out.

[Lucky9146]

Yesterday…….Off subject of the engine for a minute.

If you have not yet met Marty Schneider of MSDS you are missing out! What a great guy! I had heard a long time ago from mepstein that Marty had fabricated a fiberglass GT rear valance for 914-6 GT flared cars.

I was heading up to the LA area early Saturday morning for a different reason and decided on a Friday night to contact Marty and see, on a long shot, if he would meet me and sell me one of these GT flare valances. To my pleasant surprise he said he would! So I present myself to his shop at the prescribed time and there he was. Great to talk with, easy going with a wealth of information and experience, and lots of good stories. Not hurried to beet feet out of there on a very warm Saturday morning plus holiday weekend, he took the time to educate me on the nuances of the valance and make sure I understood what needed to be done for fit and finish. He even offered a 100% refund. How can you beat that! Maybe I shouldn’t have said that but I get the feeling the he treats everyone well. Sorry if I spilled the beans there Marty!

I learned from Marty that he had one of these valances molded for his own car, which had factory PN GT metal flares, and then he had some valances made to sell. Keep in mind this is NOT a tall valance but rather deals with the flared fenders instead and looks to be about the same height as a regular valance.

I know, I know, a “real GT’ has no rear valance but I kind of like the idea of a clean look and it could be removed so no harm done. So, why not?

Oh, and one last thing I got the last one he had but he said he will be making another batch of 25 sometime in the future. What a great experience (well except for LA traffic). Picture below of the valance taped in place this morning. Another future project to paint and fit. Looks like a winner! Thanks Marty
P.S. It was cool to see where my headers were made.

[moparrob]

That's awesome Jim. I had the same experience when I met him at his shop and picked up the headers. He is truly an ambassador of these cars and a great guy to know and converse with. Will you need to clearance the lower edge for the exhaust tip?

[defianty]

I like the rear valance. I have a similar one made by a guy in Germany to go on my GT. For a road car I personally think they look better with the valance than the raw GT look.

[mb911]

I like the rear valance. I have a similar one made by a guy in Germany to go on my GT. For a road car I personally think they look better with the valance than the raw GT look.

(IMG:style_emoticons/default/agree.gif)

Once get to it I will be making weld flares for the stock steel valance just like I do for the rockers.

[mepstein]

I like the rear valance. I have a similar one made by a guy in Germany to go on my GT. For a road car I personally think they look better with the valance than the raw GT look.

(IMG:style_emoticons/default/agree.gif)

Once get to it I will be making weld flares for the stock steel valance just like I do for the rockers.

Ben - I'm just going to send you my car - and a bunch of cash. It will be easier in the long run. (IMG:style_emoticons/default/biggrin.gif)

Lucky - great job getting the parts together. MSDS makes awesome stuff for our cars.

[Lucky9146]

That's awesome Jim. I had the same experience when I met him at his shop and picked up the headers. He is truly an ambassador of these cars and a great guy to know and converse with. Will you need to clearance the lower edge for the exhaust tip?

Hey Rob, thanks, yes it is "some assembly required" (IMG:style_emoticons/default/sawzall-smiley.gif) and you have to make the cut out for the exhaust but I don't think it will be a big deal. I hope.

[Lucky9146]

I like the rear valance. I have a similar one made by a guy in Germany to go on my GT. For a road car I personally think they look better with the valance than the raw GT look.

(IMG:style_emoticons/default/agree.gif)

[Lucky9146]

I like the rear valance. I have a similar one made by a guy in Germany to go on my GT. For a road car I personally think they look better with the valance than the raw GT look.

(IMG:style_emoticons/default/agree.gif)

Once get to it I will be making weld flares for the stock steel valance just like I do for the rockers.

Ben - I'm just going to send you my car - and a bunch of cash. It will be easier in the long run. (IMG:style_emoticons/default/biggrin.gif)

Lucky - great job getting the parts together. MSDS makes awesome stuff for our cars.

Thanks Mark for the tip and your other help along the way. Great community and support.