Bluprint & Balance - Performance Forum

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Bluprint & Balance
Tuesday, June 14, 2005 4:44 PM
This seemed like a noob question, but not sure really. So I posted it here to.

What is all involved in blue printing and balancing a motor?
What are the benefits of doing this?
Can it be done to an ecotec?
What would an average cost be for having it done to an ecotec?

Re: Bluprint & Balance
Tuesday, June 14, 2005 5:12 PM
blueprint = rebuild

It'sa better word for a perfect rebuild. You can rebuild 2 engine and have 1 performing alot better because you took your time and check every mesure. Something I had my machine shop do for my 2.3 (IE align bore). When you bore the block, or when you change the sleeve for the eco, you have to make a choice. There's like 3 "setup" for the piston/cylinder wall clearance. If you go with force induction, the clearance will be different than an Na engine and if you check the new engine in the car have a clearance enough for reliability and performance.

When you balance the internal, it will help alot since the engine is a motion part. If it's unbalanced it will loose power because of gravity. Same thing as a tire, when it's boucing because it's not balance it doesn't feel good. Same thing for the engine. Less vibration mean the engine will turn freely witch mean less power loss.

If you want to learn more about Blueprinting and how engine work, check "engine bluepriting" by Rick Voegelin.



Gilles
2.3 Ho

Re: Bluprint & Balance
Tuesday, June 14, 2005 5:28 PM
Thanks Mfk. I'll check it out.
Re: Bluprint & Balance
Tuesday, June 14, 2005 5:34 PM
double posting is the devil



Re: Bluprint & Balance
Tuesday, June 14, 2005 5:34 PM
Can a machine shop do this?
I had a friend that bought a B&Bed 302 for his mustang. It supposedly was capable of 100,000rpms. I know an ecotec probably couldn't get that, could it?
Re: Bluprint & Balance
Tuesday, June 14, 2005 5:36 PM
[quote=ßãggéÐÇåv98 (Ûñqùðtäߣè Øñé)]double posting is the devil

Very Sorry
Re: Bluprint & Balance
Tuesday, June 14, 2005 5:39 PM
Xian G wrote:Can a machine shop do this?
I had a friend that bought a B&Bed 302 for his mustang. It supposedly was capable of 100,000rpms. I know an ecotec probably couldn't get that, could it?


Thats a load of @!#$ that they were feeding you. Even race engineered F1 engines can't spin more than 15,000 RPM. At 100,000 RPM just the weight of the pistons would require rods that were so heavy and thick that the motor would never spin. The stresses on the engine would be insane.

I hope you meant 10,000 RPM, but even then, its a stretch.





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Re: Bluprint & Balance
Tuesday, June 14, 2005 5:58 PM
Perhaps it was 10,000. All I know is that the dude threw out his REALLY nice 289, w 4000 miles, for it. Besides, it was a Ford so I didn't pay to close attention.
Re: Bluprint & Balance
Tuesday, June 14, 2005 10:53 PM
Anyone who really knows or likes cars pays attention to every manufacturer. If you know a guy who REALLY knows his @!#$, (if he doesn't work for a dealer) he probably doesn't bash a whole lot on other manufactures.

...and you meant 10,000 rpm... Trust me.
Re: Bluprint & Balance
Wednesday, June 15, 2005 1:37 AM
F1 rev between 17000-19500rpm.

Yes a machine shop can do it. Mine did it for me.



Gilles
2.3 Ho

Re: Bluprint & Balance
Wednesday, June 15, 2005 3:36 AM
and they dont even have valve springs, they use pockets of air that the lobes on the cams create to open and close the valves



LE61T PTE6262 Powered


Re: Bluprint & Balance
Wednesday, June 15, 2005 7:03 AM
that would be cool to have a high revving ecotec, Ive had thoughts of dumping the boost and building the baddest all motor eco ever



1989 Turbo Trans Am #82, 2007 Cobalt SS G85





Re: Bluprint & Balance
Wednesday, June 15, 2005 8:25 AM
RainDown wrote:Anyone who really knows or likes cars pays attention to every manufacturer. If you know a guy who REALLY knows his @!#$, (if he doesn't work for a dealer) he probably doesn't bash a whole lot on other manufactures.quote]

1. This particular incident was almost 15 years ago. I can't remember every detail over that long of time, nor is it that important in life to.
2. I do work for GM. If you took the time to read my profile, you would have seen it. Do you?
3. I have mostly work on small block & big block GM V8's. Not 4 cylinders.

Actually the ecotecs are pretty much balanced already (talked to a GM engine manufacturer) He said it would be a waste of $150, or what ever the shop would charge.

Yes Ecotecs do to have valve springs, the GM service manual says it does and explains how to remove them. There is also valve spring specifications. Not to mention, there are valve springs in the ecotec head I have.
Re: Bluprint & Balance
Wednesday, June 15, 2005 9:39 AM
^ He's talking about F1 engines, not eco's





4cyltuner.com - Information Source For 4 Cylinder Tuners
Buy stuff from CarCustoms Ebay! Won't be disappointed!

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