Friday, February 19, 2010

Windshield Wipers

We found two 212 wiper arms from AM Equipment from Traction Heavy Duty Parts and they installed well. We mounted them on new Cadel marine windshield wiper motors, found a boat store. The wood underneath the dash (where the previous motors were bolted in) was all rotten so it was removed. We bolted the wipers on with out replacing the wood. In retrospect, with the removal of the wood, we should have got wiper motors with shorter stems (the part that goes from the motor through the exterior to the arms). However, the longer stems still worked well.

Monday, February 15, 2010

The 318 poly engine

The 1957 - 1967 Mopar 318 Poly (Semi-Hemi) 'A' engine used in Myrtle has a partial hemispherical head. It is a mostly different engine from the modern 1967+ Mopar 318- 340 - 360 small block 'LA' motor which has a wedge head.

A decent history of the Poly engines:

While we originally toyed with dropping in a new Mopar crate engine (maybe even a Viper crate), the idea of having a cool retro engine just became too tempting.

Often Overshadowed By Their Hemi Brethren, They Might Be The New Cool:

Some of the parts on the lower part of the 'LA' block are interchangeable, but almost everything from the cam up is different (excluding the ignition).

The 318 Poly was not a popular performance motor, so often the parts are harder to find, or there won't be as great of selection. However, you can get everything you need to rebuild an 'A' engine here:

The Travco weighs 10,000+ lbs. With a 318 Poly stock engine it keeps up; but that's about it. Don't worry... you can add a little bit of performance to this engine; The 318 Poly heads produce excellent torque for the engines relatively small displacement. This isn't a bad thing in a motorhome like a Travco.

Performance gains can be found with a cast iron OEM 4 barrel dual plane intake, or even the aluminum 6 barrel dual plane intake (Edelbrock P600). You do not want the Weiand single plane intake. A single plane will reduce torque at lower RPMs. You are driving a motorhome. You want torque at low RPMs.

Myrtle is upgrading to the Edelbrock P600 with 3 x 2 barrel Rochester carbs configured with progressive linkage. We will set this up so that most of the driving is done with only the centre carb (providing decent gas mileage), with the outboard carbs opening for extra power when you floor it. That's the plan anyway...

Carbs and stuff can be found here:

You'll have to scrounge for the intake.

Headers for your Travco? TTI makes the only Poly headers I am aware of. We have some TTI "LA" headers on the Dodge Dart and they are very good quality. I have no idea if the Poly headers will fit on a Travco. There is a lot of room under there, so they might be OK, but you would need to modify where they connect into the rest of the exhaust.

Here are some forums to ask any questions you might have.

Performance Poly Forum

Yahoo Poly Forum. This group knows there stuff.

Sunday, February 14, 2010

New Photos

Here are a few pictures taken of Myrtle today. It was rather crisp and cold out but we are looking forward to working on her soon. The main things lefts are; installing solar, checking out the plumbing & appliances (I hope they work!), getting the windshield installed, resealing the back window, replacing the cracked panes on the front door window, and tuning up the engine.

Tuesday, February 2, 2010

A Terrific New Travco Website

Please check out the Dodge Travcos website. From his website description, the site is put together by James Gary "Andy" Anderson, former Secretary-Treasurer of the Dodge Chassis Chapter of the Family Motor Coach Association. The website has great pictures and wealth of information including; maintenance, parts, and restoration for Dodge Chassis motorhomes.