A place to share information about and to get help with your Tiffin Allegro and its P-30 Chevy chassis. I'm amazed at the seemingly infinite combinations of floor plans throughout the years. 

Members: 24
Latest Activity: Oct 3, 2019

Discussion Forum

Last camp or for the year 2 Replies

Well it was cold and rainy but fun. The furnace works great after I put a new circuit board in her. Good thing because it snowed on us the last night.

Started by Philip Wolsonovich. Last reply by Daniel Long Feb 8, 2019.

Another successful trip

Well another successful trip. This one to colonial Williamsburg VA. Had a great time and no incidents at all.

Started by Philip Wolsonovich Jul 6, 2018.

Redoing Onan genset wiring an such.... 3 Replies

In the next few weeks I've made the decision to pull the BFA 4.0 genset from the Allegro and get it into the workshop. Too many past splices to the wiring, the remote panel works half the time, now…Continue

Started by Daniel Long. Last reply by Daniel Long May 4, 2018.

Removed the Roof Rack 3 Replies

Well after years of contemplation, I finally decided to remove the roof rack. I love the classic Allegro look, but I just couldn't keep up with the leaks anymore. From the factory, there are 44…Continue

Started by Jim Stoltz. Last reply by Jim Stoltz Oct 4, 2017.

Comment Wall


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Comment by Daniel Long on October 3, 2019 at 5:31pm

I decided to use a guy I trust in Daytona, Bill's Discount Carburetor. he's old school and when I got my carb back from him I almost accused him of swapping it for a newer one! Now I get 19+ pounds vacuum and the engine sounds like it's on a dyno stand in the shop.  Jim, you may want to try him out. it was about $200 then shipping. His wife runs the office, so you know it's legit.

Comment by Rick Faunce on October 3, 2019 at 11:55am

Jim, Sounds like your PCV valve is clogged or not working as far as the crankcase pressure. Or the port in the carb for the PCV is clogged

Comment by Jim Stoltz on October 3, 2019 at 10:19am

Yeah mine has never run right. It's a reman carb, so it's "new." It doesn't like to start when it's cold, but that's because of the way I have the choke adjusted. If it sits for any period of time I need to pump the pedal 10-15 times before it will fire. It's running super rich and at a stop light will eventually start to flood. Idle drops and I have to put it in neutral to rev it up and clear it out. Once it's moving it's great.

I have a lot of crankcase pressure and I'm wondering if that's normal. I did a compression check and all of the cylinders are fine, but I get a lot of pressure/smoke out of the breather. It's hooked up to the air cleaner so it gets burned up anyway but it seems excessive to me. That being said, it has plenty of power and isn't using any oil. It leaks a little, but I never have to top it off. Have you noticed crankcase pressure on yours (or anyone else with a 454?).

And I, too, recently fixed my generator. It was running out of gas. It was a loose hose clamp at the pickup tube - the pump was losing suction. It's been bugging me for years. I'm glad I finally found the problem.

It's been a while since I've posted here, but I was also plagued with a squirrel infestation earlier this year. They set up camp in the void between the top of the gas tank and the floor. They chewed through ALL electrical, air and fuel lines that run across the top of the tank. It was a lot of work but I got it back together and working for our annual trip to NASCAR this past June.

Comment by Daniel Long on October 2, 2019 at 9:57pm

Wow. Can't believe it's been so Long (sorry for the pun.) but I've gotten the rebuilt carb installed, timing redone, many other items fixed and the RV is finally running closer to what she should be. Found fuel leaks at the main fuel pump and generator, so that should help the MPG rating a bit. Follow on my YouTube channel or on blog

Comment by Daniel Long on April 9, 2019 at 6:35pm

Going to be pulling the Rochester Quadrajet to send to Bill's Discount Carburetor in Daytona Florida for a complete rebuild. Great guy and totally knows carbs. He saved my at least a couple of times before on my Tioga. This carb has not had any work done on it since new (33 years now). Time for a refresh.

Comment by Daniel Long on January 6, 2019 at 5:59pm

Made it back on what was a 3,242 mile trip down and up the east coast over 2 weeks. Still some tweaking to do on the genset and the carb but overall it was a memorable family trip.

Comment by Daniel Long on November 9, 2018 at 7:21pm

Been debating a change in the drive train. First was a rear end swap to a better ratio for highway but upon all the advice I'm getting it's looking like swapping the transmission to a 700R4 would get me the economy at highway for about the same cost as an overdrive kit. We'll see....adventures at : as always folks.

Comment by Philip Wolsonovich on July 11, 2018 at 9:50am

Oh ya and you have to put a throttle position sensor on the carburetor.

Comment by Philip Wolsonovich on July 11, 2018 at 9:45am

Jim I have a 4L80E transmission with a aftermarket controller. Yes it's electric so you need to either change the speedometer or get a conversion box. The speedometer is cheaper. You also have to cut the drive shaft and move the transmission mount back. I got mine used out of a box truck and it bolted right up to the 454. She runs 65mph at about 22rpms. I keep the pulling power for hills and speed for the rest.


Comment by Daniel Long on July 10, 2018 at 6:59pm

I saw the 10-11 mpg figure and thought, "Dang! I wish I was getting that!" I've been getting 6-7 mpg on my original TH400 tranny. Been considering swapping out the rear end to a lower ratio to get better highway efficiency.




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Discussion Forum

Last camp or for the year 2 Replies

Started by Philip Wolsonovich. Last reply by Daniel Long Feb 8, 2019.

Another successful trip

Started by Philip Wolsonovich Jul 6, 2018.

Redoing Onan genset wiring an such.... 3 Replies

Started by Daniel Long. Last reply by Daniel Long May 4, 2018.

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