My Road Trip Motor Progress

[rick m]

Drove the chop to Frenchy's pre-Bugorama open house last night. The trip was exactly 100 miles from the QT gas station and back. Check the mileage.  4.03 gallons = 24.8mpg with my 2275 and I was not driving it all that easy. Need to go up one jet size to a 165 main. Was running a little lean but otherwise very crisp.  I have over 500 miles on the motor now. Time for an oil change and general clean-up...as well as time to finish the rear decklid and apron with paint.

Rick M

[andy198712]

Sounds like its bedding in nicely!
So al in all a nice long distance motor?

[rick m]

Yes...I plan to do some road trips and events later in the year now that it is broke in. Will be taking out the chromoly push rods and going to SMITH BROS aluminum racing push rods.  YES...I did say ALUMINUM.  They make custom ones that you can buzz to 11,000 RPMS!  No hype!  Ray Vallero was doing this years ago in his 912 Porsche VW powered drag car.  He has them in some other motors and I am going to make the move too. Just one more step to helping quiet down the motor.

Rick M

[andy198712]

Very cool! One of his tricks, I believe is to drill a small hole in the PR wall near the top to aid oiling of the top end

[rick m]

Very true. I did this on my current motor.  Keeps the rocker arm assembly lubed very well. The oil also helps pull more heat out of the head.

RM

[andy198712]

Very true. I did this on my current motor.  Keeps the rocker arm assembly lubed very well. The oil also helps pull more heat out of the head.

RM

yh totally agree, going to do this on my build too

what size hole did you drill?

[rick m]

I will check for you. I did two sets quite a while back and I will have to verify the set I did not use and post the info for you.

RM

[axam48ida]

Taylor...NO.  You are the only one paying attention.  :-)  Just thought I would throw it out to see if anyone thought about it.  My cam is at spec'd out at 236 at .050.  The lift figure was correct.  Lobes are ground on 107 centers.  Good to see some people are thinking and paying attention

I am playing around with the whole engine dynamic related to cam, carburetion, compression, ignition, etc. The Salzburg head, before someone else posted it, started making me think about some of this. Those motors, I believe, were set up close to 9 to 1 compression from what I have read about them. I would love to have the cam specs/valve timing on them.   It is interesting that they ran IDAs on relatively small motors, gutted the stock exhaust system and ran it.  I am interested in trying new combos taking into consideration a lot of different factors.

Rick, I am paying with two motors. One a 69x88 and the other is a 74x92. Both have SH heads.  I like to try that cam in one of the motors. Can you email me the cam source?
Thanks
Merry Christmas!!!!

[rick m]

The cam was an ENGLE K65. Still love it. Very driveable. I run it with 1.45 rockers.

Rick Mortensen

[Catbox]

I have just read this whole thing and it explains a lot about the very, very poor set of heads that are on my current 1915.
It was commissioned by a friend from a local builder.

What was received is a over heating poorly built engine.
I am about to pull it apart to rebuild it with much better components.
Due to this thread, I may choose to not sell off the heads that are on the car.
Perhaps one day I will put some time and effort into removing all of the cutter marks and sharp edges.

Thank you for taking the time to post the whole build and not just the start of it.