Balance, bueprint, polish

[C-Man]

Interesting discussion. I guess the proof will be in the pudding once a Hemi gets blueprinted and see what the numbers are before and after.

[analyte]

C-man,

In the end, you really have the best reply. Basically until someone starts modifing the Hemis FROM the inside out we really won't know what will and what won't SHOW any gains in power.

But it sure is fun to speculate..... :lol:


Kerry

[bipto]

Check this article...

http://www.popularhotrodding.com/tech/0403phr_hemi/

Not too much in the way of balancing & blueprinting specifically, but it speaks in general terms about potential Hemi performance gains FROM typical mods. Interesting stuff.

[snickle]

Interesting note on the addition of a cold-air kit.

[davidl13]

in reference to the popular hottrodding's mention of the air intake system reprogramming issues, does anyone know contact info for Squier Inc

here is

Street & Performance
Dept. SRB, #1 Hot Rod Lane,
Mena, AR 71953,
479-394-5711
http://www.hotrodlane.cc/

[bigdaddyoc]

The part of adding a CAI does bother me. How are these guys making the claims that they are if we can't see any gains without reprogramming? K&N has never mentioned anything about changing anything to me and they are telling me I'll be happy with a "noticeable increase"...so what gives?

[snickle]

I suspect, what they really mean is we won;t get the maximum benefit without a reprogram. Enough evidence exist that we get an improvement, just probably would get more with a better fuel curve.

[henry]

If you don't mind me asking, who were you a supervisor for and what production engines did you build or supervise the building of?

I worked for a year at GM's St Catharines engine plant building 5.3, 5.7 LS1 and 5.7 LS6 V8 engines. Worked head machining, rod machining, and cam machining. Crank machining was done via automated CNC tools. The rest were done with proprietary tooling.
The precision and accuracy to which the items were manufactured would give you fits. I'll give you an example: Valve seat bores were toleranced to within + / - 8 microns. They were automatically double checked on the line, and then sampled every 50 parts for a hand instrument check.

Henry
(happy to be back working at Chrysler now)

[SRTengr]

I find this debate intriguing, but it all comes down to how meticulous your engine builder is whether you will see an improvement over the engine in your new Magnum.

Kerry, it's not about the engine assembly line. It's about the tolerance on the print for each component that comes in FROM a supplier. Of course a good engine builder can do better, but if you find a normal engine builder he won't do any better.