Resolved Machining costs

[NOSLO2PT0]

Anybody know off-hand what it costs to machine a set of 1G Big rods to fit 2G pistons?

 

[Gamble97]

Mike,
Call Bill at Apex.
(630) 766-7168

 

[NOSLO2PT0]

Paul,
I know he would know. Just thought I could get an answer here without bothering the guy. Gotta see if I can find a set already put together or just find pistons and get the machining done.

 

[Gamble97]

Mitsubishigraveyard.com usually has a set.
Good luck.

Mike, check this
http://www.dsmtuners.com/forums/ven...-bolt-frankenstien-rod-machining-49-99-a.html

 

[steve]

Mike, check this
http://www.dsmtuners.com/forums/ven...-bolt-frankenstien-rod-machining-49-99-a.html

Ya, check out that surface finish in the last image and then run to Apex as fast as you can.

 

[BogusSVO]

they are reaming them to size it looks,
I would like to see them finised to size on a rod machine personally, that would improve the surface finish.

but as long as its the right size with the right press fit and the wrist pin dosnt hang up when your installing it they should work just fine.

 

[TofastForU_99]

The DSM Graveyard 49.99

DSM Graveyard - Your #1 Source for DSM Parts!

Mitsubishigraveyard.com usually has a set.
Good luck.

Mike, check this
http://www.dsmtuners.com/forums/ven...-bolt-frankenstien-rod-machining-49-99-a.html

its not mitsubishi graveyard its called the dsm graveyard.

 

[steve]

they are reaming them to size it looks,
I would like to see them finised to size on a rod machine personally, that would improve the surface finish.

I'm not a machinist and I know you are or at least have a lot more background than I but it's not the reamer but more how they are using it that makes my skin crawl.

 

[NOSLO2PT0]

Mike,
Call Bill at Apex.
(630) 766-7168

Well, I just talked to Bill about getting some other machine work done too. He is WAY out there in prices. $300 just to install a rotating assembly????? You kidding me?

 

[BogusSVO]

thats not a bad price, depending if he is doing a dry build to check clearances, then tear it back down, reset what clearances need to be reset, and do a final build... $300 is very fair.

 

[steve]

Just like with the doctor you should get more than one opinion. Call Terry and Class One in Freeport 815-235-1350 to see what he charges. Then you can decide if you want to do it yourself or pay and get the advantage of having someone to bi*** at if something goes wrong.

 

[Gamble97]

Try calling Opel also. They are right by my house.

 

[NOSLO2PT0]

Steve,
I just talked to Mike Reichen about Class One and Terry. He said if I didn't like Bills prices, then don't even bother calling Terry

 

[steve]

That puts the quote in perspective.

 

[defrag010]

The reamer in that picture is a piloted reamer. You can see a groove about halfway up the flutes. The bottom part is smaller than the part above the groove.. usually about .015" step is standard for piloted reamers, but this reamer has two size changes. It has one small groove close to the bottom, and then another groove about halfway up the flutes.

You can see in the first picture that they only plunged the reamer down far enough that the first size cut only extends a small amount down in the pin boss. The pilot part of the reamer is designed to guide the reamer, not cut. If you look in the second to last picture, you can see how far the reamer actually is down inside the pin hole and judging by that the top groove in the flutes (the second size transition) will not even be halfway through the pin boss. If you look at the last picture, you can see that the top 1/4 or so of the pin boss is smooth while there is a step with rough metal below it. The smooth part is cut to size, and the "rough" finish is just a result of the change in size of the reamer as it's plunged.

By looking at those pics in sequence, it looks like they just centered the rod up and did a small plunge cut, stopping only a short distance into each size transition to pull back out and take a picture. Also, this is fine because the tolerance for press fit in the pin boss isn't as critical as floated rods.. so the accuracy doesn't need to be equivalent to a pin hone.

A reamer will do just fine. Nothing to worry about!!

 

[TurboAnything]

you think $300 is a lot! Bill is in my opinion the best guy for the job. I have had at least 15 motors all forged internals machined and assembled by him ranging from Honda b16s B20s to Sr20s and many 4g63s and not one has come apart. Motors he built for me 8 years ago are still boosting.