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914World.com _ 914World Garage _ 1975 Porsche 914 1.8 Smog Removal / what to keep
Posted by: 1975Porsche914 Apr 1 2020, 08:41 PM
Hello,
My son and I have a 1975 Porsche 914 1.8l. Has the same stock fuel injection. Been sitting in the garage for years, but want to revive it. So far, took the gas tank out, getting professionally cleaned and sealed, all the rubber hoses are shot, but the 2 plastic fuel lines appear to be good.
Need advice on just about everything, but engine issues first.
1. Removing all the 1975 smog items. Not sure what exactly what smog items to take off and and what should be only be remaining to run the fuel injection. Step by step instructions would be good.
2. Seals and gaskets to replace.
3. Pulled off the old heat exchangers and old Ansa exhaust, to replace with a header and muffler.
4. Air cleaner improvements?
5. Performance upgrades.
Suggestions welcome !
Posted by: ndfrigi Apr 1 2020, 10:01 PM
Welcome to 914world!
Where are you from OC?
well this is my previous 75 1.8 F.I. Bought it last 2011 and all the smog parts wer removed by previous owner. Just to give you idea. 
Posted by: Maltese Falcon Apr 1 2020, 10:03 PM
Father & Son projects are 
and 
!
Posted by: abes914 Apr 1 2020, 10:26 PM
Although the plastic lines seems fine, I would replace them with stainless steel lines. Tangerine racing sells them and a local guy from la also (sorry I forgot his name).
Most seals and rubbers that I replaced are from 914rubber.com
There are plenty of folks from so cal that always happy to lend their hands but will have to wait for that until we get rid of this cov19. And a lot of helpful folks here in the 914world.
Congrats!
P.S.
We love pictures 
Posted by: ndfrigi Apr 1 2020, 10:31 PM
Although the plastic lines seems fine, I would replace them with stainless steel lines. Tangerine racing sells them and a local guy from la also (sorry I forgot his name).
Most seals and rubbers that I replaced are from 914rubber.com
There are plenty of folks from so cal that always happy to lend their hands but will have to wait for that until we get rid of this cov19. And a lot of helpful folks here in the 914world.
Congrats!
P.S.
We love pictures
Local member who supply SS fuel lines his name is Robert @Rotary’14
Posted by: Coondog Apr 2 2020, 06:35 AM
You may want to rethink the replacement of your heat exchangers. It does get cold in OC.
Let’s brake it down what putting on headers and losing your HE will give you.
PROs.... maybe your going to gain a few HP out of a older crap 1.8 engine that’s probably giving you 65-70 RWHP.
CONs.... You just spent a lot of money for a few HP
You will get cold and driving without a defroster sucks
Car will be louder. Which in my opinion is stupid if you don’t have the HP to back it up
Replace your fuel lines, get your car to be 100% mechanically safe. Listen to your local OC 914 brothers, they are some of the most knowledgeable 914 peeps I have met and read everything in the Lapuwali Classic Thread Forum.
Posted by: Cairo94507 Apr 2 2020, 07:42 AM
Yes, welcome to the madness. Coondog hit the nail on the head.
Posted by: ConeDodger Apr 2 2020, 07:59 AM
Is it a California 914? If so, there is more smog than 49 state. Keep the parts as someone with a ‘76 might need them to pass the smog test. You’ll need to seal the heads after removing the pump. I’ve heard it’s NPT but not sure. Other than that, it’s not much different than the 49 state cars. Your exhaust will eliminate the CAT.
Posted by: abes914 Apr 2 2020, 11:59 AM
Instead of headers and exhaust, why not backdate to older heat exchange system? They will flow better, less weight and keep you heat too.
[insert shameless promotion here] I have a 73 1.7 heat exchanger with most of heat tubes (I think) for cheap. Just need heat exchange support and muffler. just something to ponder.
Posted by: dr914@autoatlanta.com Apr 2 2020, 12:00 PM
I would leave it stock and not "pull" anything off!!!!!!
Hello,
My son and I have a 1975 Porsche 914 1.8l. Has the same stock fuel injection. Been sitting in the garage for years, but want to revive it. So far, took the gas tank out, getting professionally cleaned and sealed, all the rubber hoses are shot, but the 2 plastic fuel lines appear to be good.
Need advice on just about everything, but engine issues first.
1. Removing all the 1975 smog items. Not sure what exactly what smog items to take off and and what should be only be remaining to run the fuel injection. Step by step instructions would be good.
2. Seals and gaskets to replace.
3. Pulled off the old heat exchangers and old Ansa exhaust, to replace with a header and muffler.
4. Air cleaner improvements?
5. Performance upgrades.
Suggestions welcome !
Posted by: 914werke Apr 2 2020, 12:24 PM
If you do decide to continue down this path, Ive been seeking one of those parts, http://www.914world.com/bbs2/index.php?s=&showtopic=343928&view=findpost&p=2792445 the grey pipe in the picture posted 
Posted by: JeffBowlsby Apr 2 2020, 01:24 PM
I would leave it stock and not "pull" anything off!!!!!!
Posted by: 1975Porsche914 Apr 3 2020, 12:47 PM
Is it a California 914? If so, there is more smog than 49 state. Keep the parts as someone with a ‘76 might need them to pass the smog test. You’ll need to seal the heads after removing the pump. I’ve heard it’s NPT but not sure. Other than that, it’s not much different than the 49 state cars. Your exhaust will eliminate the CAT.
Hello, yes it is a CA 1975 Porsche 914, 1.8l
I will keep the smog stuff that is still good.
Now I am looking for an exact direction of what exactly to pull off, and what to keep on a no smog 49 state 1.8l car. Pictures.
Posted by: 1975Porsche914 Apr 3 2020, 12:49 PM
Welcome to 914world!
Where are you from OC?
well this is my previous 75 1.8 F.I. Bought it last 2011 and all the smog parts wer removed by previous owner. Just to give you idea.
OC = Yorba Linda, CA
Thank you for you reply
Posted by: 1975Porsche914 Apr 3 2020, 12:52 PM
Although the plastic lines seems fine, I would replace them with stainless steel lines. Tangerine racing sells them and a local guy from la also (sorry I forgot his name).
Most seals and rubbers that I replaced are from 914rubber.com
There are plenty of folks from so cal that always happy to lend their hands but will have to wait for that until we get rid of this cov19. And a lot of helpful folks here in the 914world.
Congrats!
P.S.
We love pictures
I agree, think changing all the fuel lines should be changed.
I think I may need a list of what should be gone with no smog and what it looks like, and what the 1.8l should look like de-smogged.
Posted by: 1975Porsche914 Apr 3 2020, 12:54 PM
You may want to rethink the replacement of your heat exchangers. It does get cold in OC.
Let’s brake it down what putting on headers and losing your HE will give you.
PROs.... maybe your going to gain a few HP out of a older crap 1.8 engine that’s probably giving you 65-70 RWHP.
CONs.... You just spent a lot of money for a few HP
You will get cold and driving without a defroster sucks
Car will be louder. Which in my opinion is stupid if you don’t have the HP to back it up
Replace your fuel lines, get your car to be 100% mechanically safe. Listen to your local OC 914 brothers, they are some of the most knowledgeable 914 peeps I have met and read everything in the Lapuwali Classic Thread Forum.
Ok, I think the "back dating" of the heat exchangers is a good idea.
I agree, I intend to replace all the fuel lines.
Thank you !
Posted by: 1975Porsche914 Apr 3 2020, 12:56 PM
Is it a California 914? If so, there is more smog than 49 state. Keep the parts as someone with a ‘76 might need them to pass the smog test. You’ll need to seal the heads after removing the pump. I’ve heard it’s NPT but not sure. Other than that, it’s not much different than the 49 state cars. Your exhaust will eliminate the CAT.
Yes, it is a 1975 Porsche 914 1.8l CA car.
I will keep the parts.
What is the best way to "seal the heads" ?
So what are some of the best exhaust systems ?
Need help on making a 49 state car. Thanks..
Posted by: mepstein Apr 3 2020, 01:37 PM
Stainless steel heat exchangers and one of Ben’s / MB911 stainless steel mufflers.
@http://www.914world.com/bbs2/index.php?showuser=9892
Posted by: 911GT2 Apr 3 2020, 03:06 PM
I would leave it stock and not "pull" anything off!!!!!!
Agreed
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