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> Some more Q's (Updates), Backfires and spitting through carb on 1 side
Moneypit
post Apr 28 2014, 10:00 AM
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Okay, so I've sat down and started trying to plan where I want to go with the 914. I've got a few dillemas and questions, and could use some advice, criticism, whatever floats your boat.

Firstly, motor is a 2.0 rebuilt with slightly higher compression than stock, and has a cam set up for carburetors (I have the details from Dan around here somewhere). In the pre-Ethanol days, this would not have bothered me one bit. However, I feel like the Webers in the past were always a PITA, between throttle linkage, synchronizing, stuff like floats, jets, needles, etc. Now that Ethanol is being pushed more and more, I'm hearing these issues that it can eat away at older rubber lines and other materials, break down if it sits too long, cause rust in fuel tanks, the list goes on. So my first dilemma then is to keep the carbs, or ditch? Can I "ethanol proof" the Webers, ie replace any rubber with newer materials, brass? What about the floats themselves? I Really, Really loved the sound of the carbs, but I am wondering whether there is a better solution? Stock FI bits are long gone btw.

Following onto the question of keeping/ditching the carbs, lets say I did ditch them, would Megasquirt or something work well with the cam? If I understand correctly a carb-specced cam would have a longer duration than the stock FI cam. I'm wondering if Megasquirt or another standalone FI can take advantage of that?

Secondly, I have the Empi 8-spoke style wheels, which I really dig. How strong are these? I can try and get some pics of them at some point to verify brand and everything if needed, but I'd heard in the past the "Riviera" wheels on my old 1.8 weren't very strong, and weren't recommended for autocross or heavy turning loads. I don't plan to autocross, however I do like to drive somewhat aggressively at times, and do want to try and do a track day at COTA sometime. Are the Empi's fine for that, or is there another similar looking alternative that's stronger?

Third, I'm also hung up on paint. The car is white right now, with an attempted creamsicle LE style job on the rockers and doors. Bumpers are chrome, front valance is stock but beat up. At one point I tried to mock up some paint schemes, but with the body being white and me not being willing to strip the car completely down for painting, I am thinking that she's going to have to stay white. I like the 2-tone LM style paint, but I don't want to make a "fake" LM car. What other color combos might look good with white, but leaving the wheels white? The wheels are already white but I figured I'd strip them down and refinish them. Not sure I want the wheels to be trim color. At one point I thought of a blue, that would be somewhat unique. Also wouldn't go with the Porsche lettering in proper NARP fashion. Just 914 badging where appropriate.

Last (for now), I plan to delete the center console, but I want to retain the gauges as in the heat down here I want to be able to keep a good eye on all the vitals. Are there some good sources for mounting some engine gauges under the dash, that will still have a 60's/70's Porsche racing look? In the interior I kind of wanted to go classic Porsche racing theme, with the bare Rennshift, maybe redo the doors "RS" style with simple door pulls/latches, pull the heat/AC controls since I have no Heat Exchangers, etc. Might try a stealth or retro-look modern stereo for the longer trips. Any reccomendations for 904 style or similar gauges? Maybe a 917 style shift ball for the Rennshift?
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Moneypit
post May 7 2014, 07:39 AM
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***UPDATE***

After getting some more time on the car last night, here are some major discoveries:

1) Fuel lines are new, hose clamps are new, fuel filter is new. Mechanic @ Stuttgart Southwest in Phoenix had addressed all the hoses.

2) Carbs have narrow Venturis. They do not have engraving on the top like the other set do, but they are definitely smaller than 36mm, might even be 28's. I'm leaving them alone for now until we can get the car inspected/registered to see if they'll run right.

3) I forgot my motor mount bar was bent! At some point before she went down in'04, I had hit a speed bump that was too tall and it bent the engine bar on the driver side. Maybe it's just the bolt that's bent, but I remember when we dropped the motor that the whole thing was skewed. I'd intended to swap if with the one from the 1.8, but I wasn't around to make sure that happened so here it sits. How much are motor mount bars going for? Is anyone making an HD version? I have some JWest motor mount bushings still, so I can do that at the same time.


NOW, issue regarding how the motor is running: The driver's side of the motor seems to be running rougher, backfiring, popping back through the intake, and missing under throttle. I think it is the rearmost cylinder on driver's side. What causes sputtering or backfires that come back through the carb? Dizzy is a 009, and should have 32* under full advance dialed in.

What I am wondering is if this means the ignition isn't sparking properly on one of those cylinders? The other cylinders are fine, but I feel like that back cylinder is the one that isn't happy. I'll need to pull the plugs I guess and check them, but it definitely seems like 1 cylinder is not behaving like the rest. Would different plugs or moving to an electronic point/CDI system help? How about an SVDA dizzy down the road, since the carbs have the vacuum advance ports?
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Moneypit   Some more Q's (Updates)   Apr 28 2014, 10:00 AM
r_towle   so, no matter what you decide for a fuel system, ...   Apr 28 2014, 10:15 AM
Moneypit   Thanks. I'll dig up the specs Dan printed out ...   Apr 28 2014, 10:49 AM
r_towle   for Webers, Google Redline weber They are the dist...   Apr 28 2014, 11:31 AM
dcecc1968   Good questions. Looking forward to seeing respons...   Apr 28 2014, 12:30 PM
Moneypit   Good questions. Looking forward to seeing respon...   Apr 29 2014, 08:11 AM
Dtjaden   Here is another source for Weber parts and rebuild...   Apr 29 2014, 08:28 AM
PanelBilly   Anybody else here have the need to start chanting ...   Apr 29 2014, 08:42 AM
aircooledtechguy   If you keep the Webers, ditch the X-bar linkage in...   Apr 29 2014, 09:03 AM
Moneypit   If you keep the Webers, ditch the X-bar linkage i...   Apr 29 2014, 09:07 AM
r_towle   Replace rubber lines under the gas tank.   Apr 29 2014, 06:46 PM
Moneypit   Pulled the spare Webers out of the trunk, and eyeb...   Apr 29 2014, 10:22 PM
Moneypit   Update: had to look up the right names, but here i...   Apr 29 2014, 11:41 PM
Moneypit   ***UPDATE*** After getting some more time on the ...   May 7 2014, 07:39 AM
ThePaintedMan   Can you show us pics of the linkage? What you...   May 7 2014, 07:54 AM
Moneypit   Can you show us pics of the linkage? What you...   May 7 2014, 08:10 AM
r_towle   It's carbs Linkage and or dirty idle jets, or ...   May 7 2014, 08:09 AM
rhodyguy   i would buy the synchronizing tool FIRST. determin...   May 7 2014, 08:17 AM
r_towle   First off, remove and clean the idle jets....see i...   May 7 2014, 08:22 AM
rhodyguy   does the engine smooth out when you increase the r...   May 7 2014, 08:28 AM
Moneypit   does the engine smooth out when you increase the ...   May 7 2014, 08:36 AM
Moneypit   Thanks guys! I was thinking the same the more ...   May 7 2014, 08:33 AM
stugray   You need to specify if you have a tail shift or ...   May 7 2014, 08:39 AM
r_towle   Clean Your Jets   May 7 2014, 08:43 AM
rhodyguy   aircooled.net sells the STE synchronizing tool for...   May 7 2014, 08:55 AM
Moneypit   aircooled.net sells the STE synchronizing tool fo...   May 7 2014, 08:58 AM
stugray   Missing at higher RPMs can also mean that your diz...   May 7 2014, 08:56 AM
bdstone914   If you have a side shift engine bar they are easil...   May 7 2014, 09:11 AM
Moneypit   If you have a side shift engine bar they are easi...   May 7 2014, 09:16 AM
ThePaintedMan   It sounds like you have your hands full. Not tryin...   May 7 2014, 09:17 AM
Moneypit   It sounds like you have your hands full. Not tryi...   May 7 2014, 09:32 AM


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