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Messages - Jacques

Pages: 1 ... 38 39 [40]
MEMBERS Project Cars in Progress / The Brakmobile
« on: September 24, 2007, 11:31:33 AM »

Well, both propane and gasoline have their own specific advantages and disadvantages as a fuel, and both can perform very well, as long as the whole setup is OK.

There's indeed a filling adapter behind the license plate, next to the orginal tank filler. I'm gonna remove the gasoline tank sometime during the winter, and possibly, I'll fit one or two extra propane tanks instead.

Here's te link from the car at the track:

Sjak Brak2007-09-24 16:32:51

MEMBERS Project Cars in Progress / The Brakmobile
« on: September 23, 2007, 12:41:18 PM »
Well, there's a lot more to the story, but the fuel being gaseous makes a big difference, no worries about heatrisers, fuel droplets in the manifold, vapour lock in the carburettor, etc.

Also, its harder to ignite, so ignition problems will show earlier on propane than on gasoline. Besides, the advance curve for propane is completely different. Thats one of the reasons to make my car a single-fuel vehicle, since dual-fual will always imply some compromises.

MEMBERS Project Cars in Progress / The Brakmobile
« on: September 23, 2007, 10:42:53 AM »

Quote from: ardog
Sweet Sjak!!!

What is the Imp running on propane???? Why??
Well, partly because of fuel prices, as Herman said. But also for the technical side. Propane systems are so much easier to work with. And also to try something different, propane performance is virtually unknown overhere, but it is possible. My car now runs faster and gets better mpg than the original 73 specs.

MEMBERS Project Cars in Progress / The Brakmobile
« on: September 21, 2007, 01:28:47 PM »

OK, now some pictures...

the engine bay like it used to be:

And a few pics from the parts that went into it:

the car itself:

O, and last week, I found a really nice spare tire cover in the parts car, its now in the Brakmobile's trunk

Sjak Brak2007-09-21 18:31:08

MEMBERS Project Cars in Progress / The Brakmobile
« on: September 21, 2007, 07:12:47 AM »
My car is a 1973 Imperial LeBaron 4 door hardtop. Its supposed to be a (more or less) rolling project. The engine was rebuilt some 20.000miles ago (the car was not mine at that time) and is running smooth. I bought it in June 2005.
Its a lot of fun to drive this huge luxusaurus in Holland (where I live), its scaring for other traffic
So far, I did the following to the car, the very short version (some stuff caused a lot of headache, like the brakes, non-AC conversion, and making the carby fit):
- rebuilt PS pump + new hoses
- rebuilt the propane convertor
- new high performance probane carb (it was a lot of work to find all parts to make it fit under the hood)
- Edelbrock Performer intake
- MSD Probiller dizzy + MSD 6AL box + MSD Blaster SS coil + MSD adjustable timing control
- new aircleaner casing (dual snorkel, adapted to fit the propane carb)
- removed all emissions-cfrap. AC stuff and other non-funtional underhood components (a.o. alarm)
- finding & mounting new pulleys and brackets for crank/PS/waterpump/alternator for a non-AC-configuration
- removed almost all gasoline parts (the tanks still there, will be dropped soon)
- hi-torque starter
- rewired part of the engine bay
- blocked of heatriser crossover in the intake and removed heatriser valve from the exhaust
- rebuilt front disc calipers
- new master brake cilinder and new power brake booster
- new stuff in rear brakes
A big help is that I got a 1973 Imperial parts car, which has proved invaluable, not only for the parts I already used, but the dismantling of a similar car is very ineresting to learn how stuff works on the Brakmobile.
I am now facing a tranny rebuild (more on that will follow), and I purchased a set of 915 heads with NEW 1.81 exhaust and 2.14 intake stainless steel Manley valves for only 300 euros (US$ 420!!). The car still has the very sad 8.2 compression ratio combined with a broomstick-camshaft. With a thinner headgasket and the 915's, it will get to approx. 9:1. I still can go a lot higher, but the crankcase/rods/etc are in such a good (almost new) condition that its a waste to tear it apart again. The heads still need to be reworked, it will need larger valve seats and hardened exhaust valve seats (the combustion temperature of propane is a lot higher than on gasoline).
I'll post some pics later on.

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