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Tr-Carb Conversion

Brosky

Great Pumpkin
Offline
Well, where do I begin? It won't end here and now, that's for sure! Maybe just the beginning, because there is much to say about this conversion that I will post all of the pictures and details on my website over the weekend.

Several points to mention. This is not a project to be under taken if you do not have a working knowledge of cars and a very patient disassembly and subsequent reassembly process. This is not a rush job, nor one for a lazy afternoon, either.

So enough of the negatives and on to the positives. I am happy to report that after much tweaking, the car is running just super! Dale heard it via cell phone and it revs strong and quickly.

With that, let me say that my hat is off to Jeff Palya at Paltech Micropolishing. Neither Erik or I have ever seen Stromberg carbs run so sweetly after a complete rebuild. The adjustments necessary to the carbs took about two minutes, tops!! I cranked the engine twice for 4-5 seconds to fill the fuel bowls and it started right up. Erik set the idle and trimmed the chokes and it smoothed right out. After a two minute warm up, chokes went in and it revs so smoothly and sweetly, we can hardly believe that it runs so well without major tuning and adjustment.

Now for the issues that have taken so long. I documented the entire process so that if anyone is thinking about this, they will know what to expect and what they will need to do to get it right. I don't want to discourage anyone, as I think this is a great addition to the car, but you want to be prepared with the parts and tools that you will need to do it correctly.

The number one issue that takes the most time is alignment of the carbs and shafts to each other. A few weeks ago, I asked those who had converted what to expect, as well as talking to Jeff to get his concerns about the installation. There was a lot of discussion about the factory mechanical linkage versus cable and whether or not the new style solid linkage would help achieve the elusive full open throttle position.

I am very happy to report that the factory mechanical linkage will work perfectly as it arrives from Jeff with his bending and modifying, but patience and some additional mods to the pedal shaft fulcrum position and a spacer to retainer it and align it properly are necessary. I have a wide open throttle when I depress the pedal to the floor and all of the linkage is working 98% bind free. I say that because both of our wives were calling at 7:00 saying it was time to pack it in. Erik will loosen the front carb and just reposition it it ever so slightly to get the final perfect alignment in place tomorrow.

I also have to deal with the front carb hitting the reinforcement liner on the inner hood, which will require raising of the hood in the front a hair, but that's for tomorrow as well.

We did waste three hours today trying different motor mounts, but that was in vain. More on that at another time. So here are a few pics, with more to come as I get my web page done this weekend.

There is an awful lot going on before during and after these pictures, so wait for the feature film to follow. I'll start with the header and intake gasket in place, ready to start reassembly.

tricarbconv 021 (Custom).jpg


Next is the "one by one" installation process needed due to grinding operations that had to be done on the manifold flanges and to insure proper alignment of the throttle shafts to one another. First the areas that needed to be gorund and filed out are at marked in black on the flanges.

tricarbconv 029 (Custom).jpg


Now one by one installation and alignment.

tricarbconv 043 (Custom).jpg


Lastly, this was at 6:00 and we had to get haulin' to keep the brides happy. I didn't get anymore pictures at this point because we were hustling to make new emission hoses and hook up the fuel lines and finish the pedal linkage so we could get it started and tweaked.

tricarbconv 059 (Custom).jpg
 
Paul
In the words of the Taco Bell dog "How Cool Is This?"
Man that looks great and Dale thinks so to. Now all you have to do is get an Obus Forme seat and you can come to Ontario and take me for a ride.
Dave
 
Glad to hear you have it on with minimal problems Paul. When I installed mine I had to 'tweak' the main linkage brace pretty extensively. That was way back in '01 though. /bcforum/images/%%GRAEMLIN_URL%%/thumbsup.gif
 
Shawn,

It will be really cool when I can close my hood without bending it, too!!

We spent more time on the manifold and carb alignment than I ever thought that we would. Grinding and hand filing the flanges took a lot of time to get the fit just right. Luckily we had the old intake/header gasket to cut up and use as a template. Perhaps it would not be near as bad with a stock exhaust manifold? I have a lot of pictures showing what was done in between the others, so I'll post them later in the week.

But, I know that it's done 100% correctly and I can't wait to get it on the straightaway about a 1/2 mile from the shop on Friday. Sadly, I have to work tomorrow to help pay for this addiction to oil leaks.
 
T.C. just gained a wad-o-performance! Awsome Paul. that's a sight that'll make you smile every time you open the bonnett, or mash the gas pedal.
 
Dave,

I want to drive to the beach bar in the Crypt car someday...soon! And I don't even drink!!!
 
Totally awesome dude!!

And I got to hear it rev in real time!!

Crypty will seem like a Nash Rambler to
you by comparison to your rig.

I don't drink either, so I think I'll let
you drive Crypty up into the mountains where Wendy
and I know a place that makes the best Pina Coladas
on the island. Also stick wood, spit roasted whole
chicken that is locally famous.

The Pina Colada was invented in San Juan, Puerto Rico
and is a tasty non-alcohol fruit drink. The American
market adds rum, I think.

We'll all stay tuned

d&W
 
Couple of questions, Paul. What is that peculiar looking patch on your #1 exhaust header tube? Also, have you just tried lowering the engine by letting most of the slack out of the motor mounts. There should be at least 1/4" give in these things. I have found that TRF motor mounts are far superior to any other brand and offer more adjustability. That said, I moved my bonnet brace over 4" to make room for my louvers so the front carb doesn't rub any more. It is a tight fit, but dropping the engine will give you room. Try to avoid lifting the bonnet. Are the insides of you intake manifolds polished? In some circles, a rough surface makes for turbulence and increased efficiency. In some circles.

Looking good. Love you photo essays of your progress.

<span style='font-size: 8pt'>It is just a matter of time before you switch over to the cable throttle linkage. Stock linkage, when it gets hot, and it does, loves to change shape.</span>
 
Brosky,

Where did you get the header? Looks great.
 
Paul, all of your grinding and fitting just reminds me how lucky I was with my header. For me, everything fitted up just fine with zero interference. Same with the manifold and carbs.

Bill, those circles are rather large actually. A mirror polish is not reccomended for intakes. But it doesn't have to be 60 grit rough either. Nice near subliminal by the way. /bcforum/images/%%GRAEMLIN_URL%%/wink.gif
 
Bill,

That peculiar patch is the serial number place from Pacesetter. It has the model and what I presume is a serial number of sorts on it.

As far as the linkage goes, we'll give it a try. If I begin to notice a problem, off she goes. As I think you may have noticed, if I don't like something it's gone.

Erik did some playing with the mounts today and has about 1/2" of clearance on the front carb, so back down the rear of the hood goes. I will modify the inner support brace before I give up my really nice fit between the hood, fenders and cowl.

Drive time tomorrow afternoon, when the roads dry up from this heavy rain that we got all day today.

I'm going to start the web page in the next few minutes. I'll post when it's up with a lot more pictures than I had here.

Thanks to all,

PR
 
Brosky said:
Drive time tomorrow afternoon, when the roads dry up from this heavy rain that we got all day today.

We are looking at 4-6 inches of white stuff over the next 24 hours in Northern Colorado. Southern half of the state is supposed to get more. /bcforum/images/%%GRAEMLIN_URL%%/frown.gif
 
Ok, What was done to correct the misaligned throttle shafts?


<span style='font-size: 8pt'>By the way,do the swirls go clockwise or anti?</span>
 
DNK said:
<span style='font-size: 8pt'>By the way,do the swirls go clockwise or anti?</span>


OK, smarty, I feel all better now.



Good photo essay, Paul. Will help a lot of folks contemplating this conversion.

My biggest issues were carb alignment and header fit, as well.
The Falcon stainless headers take a wicked curve downward so getting the nuts to fit was a virtual nighmare, until I figured out that thin, grade 8 flat washers and tapered-head grade 8 metal lock nuts were my fix. Also, using stock gasket is the way to fly. Those "paper"-looking header gaskets that are marketed are not the way to compensate for a less than perfect header face matchup. Had the header faced and copper-sprayed my new stock gasket. Now no exhaust gas blow by. Getting the carbs to align is a trick. Would be so much easier to have a solid one-piece trips intake setup, wonder if someone hasn't tried to do that yet.

Looking good, Paul.
 
Swirls appear to be clockwise.

The correction to the alignment was handled by fitting the manifolds one by one and loosening and aligning the carbs to get the shafts perfectly.

It is time consuming and tedious, but the only way to get it right.
 
<div class="ubbcode-block"><div class="ubbcode-header">Quote:]Would be so much easier to have a solid one-piece trips intake setup, wonder if someone hasn't tried to do that yet.
[/QUOTE]

Bill, I don't disagree about it being easier. That's actually an understatement. Perhaps if these engines were still being built, we would have a lot of options. No one will invest in tooling and production for an obsolete car.
 
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