671 dual exhaust - which manifold & where would it be best to place a EGT probe?

[luvrbus]

LOL this debate has been going on since the 60's it just pops up from time to time like every 7 or 8 years, it was a running soap opera in 2007 on the Detroit Diesel Yahoo Group page for a long time

[dtcerrato]

Wow and the conversation goes on... It's all better than the average bear! I'm actually enjoying all the communication. I hope we all are. As far as I'm concerned It's all good...I first asked the questions and now have everything installed. I'm willing to feed it a blend and monitor it at the same time. Heck I (& I know we all) have done things with our bodies we shouldn't have so why not mess with the engine a little. I've been doing my vitamins for decades and so has the ole girl. 40 wt delo 100, fuel additives to compensate for the new bio-diesel, stop leak on occasion for a small headache, & on & on. The 53 has 7 to 9 million miles on her. A 69 repower that's been tuned probably twice since then. I'm considering the propane injection part of her vitamin regimen. we're only 2 years apart. It'll be fun to see who can outlast the other...It's all good

[luvrbus]

The first time I ever saw Propane injection was when I had brown hair working for Stewart and Stevenson in Houston in 1960.A trucker came in with a engine problem. I noticed a bottle of propane beside his seat and hose hooked to the blower pipe stand.
Being young and dumb I ask what is that for he grins and tells me that is my "topper" and said what is a "topper" he told me when you see a hill you turn the bottle on and the 8v71 tops the hills like they weren't there.
I thought to myself yea like we have a lot of hills around Houston,he left and I pulled the left head off, he came back the next day to check on his engine, he walked over to me and ask did you find the trouble son.
I laid the piston and rod out for him to see and told him your "topper" did a good job it took the piston,liner and rod out.
I'll never forget him he said damn son I must have forgot to turn it off he laughed and said fix her up son I got cows to haul.The boss made me remove his system and they explain to him they would not warranty the work with it connected and he was ok with he even gave me a 10 dollar tip  

A true story only a trucker could come up with a name like "topper"  

[dtcerrato]

Hey luverbus, at least I followed your advice and tapped both manifolds, thanks for sharing...

[luvrbus]

I look at it like this I don't care one way or the other because it's your bus,your engine and your money, I just won't use it I never saw good results with propane injection   

[dtcerrato]

10-4, I know what your saying. If I screw my engine up it's my own fault. The benefit is the small boost if gives. I'll be able to monitor the ole' girl with & without injection & make my conclusions and decisions. I'm conservative by nature so I probably won't overdo things but its a blast walking the turtle a little faster - although we never needed "fast". Some people ask "why carry such a heavy toad" (over 6000#) It's such a nice resource to have, It's our secondary camper (full size P-U with camper shell) then there's the dog - so its more room all the way around. We've always liked to tent camp off the path the coach takes - with this Alaska trip coming up - any camping we do away from the coach will not be in the house of cloth! It will be in the truck or a lodge. Common sense kicks in there. We'll save tent camping when we get back to the lower 48... As far as the injection goes - it's more to offset the toad weight than anything. Periodically when we're not carrying the toad - it feels like were in a race car - well not quite but you know what I'm saying - right?