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Machining wrist pin lock grooves into CTR pistons for forged rods?

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Old Sep 5, 2009 | 07:10 PM
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Default Machining wrist pin lock grooves into CTR pistons for forged rods?

Alright I bouhgt a set of forged rods not realizing that aftermarket rods use a floating wrist pin unlike the CTR pistons that use a wrist pin that is pressed into the rod so I need to know if anybody knows of some machine shops that can cut a groove into my pistons for the wrist pin locks. I'm willing to have them shipped off to have the work done.

Another option would be to use "buttons" to hold the wrist pin in place.
Here's an example http://www.vwparts.net/mm5/merchant....&Category_Code=
But I'm not sure how they would hold up in a daily driven motor.

Thanks

Last edited by Eli2; Sep 6, 2009 at 04:59 PM.
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Old Sep 5, 2009 | 08:19 PM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

what rods did you buy eagle rods can use both wrist pin design
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Old Sep 6, 2009 | 07:03 AM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

for the price of the machine work your almost better off getting aftermarket pistons which will be better anyways
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Old Sep 6, 2009 | 09:14 AM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

Just buy after market pistons than u can have any compression u want to have
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Old Sep 6, 2009 | 04:45 PM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

Originally Posted by bar'dh22
what rods did you buy eagle rods can use both wrist pin design
I believe they are these:http://www.cprparts.com/products/rod...cpr_honda.html
But are you sure about that? If so I might be just getting another set of rods then.
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Old Sep 6, 2009 | 04:46 PM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

Originally Posted by EARLdaSQUIRREL
for the price of the machine work your almost better off getting aftermarket pistons which will be better anyways
Someone mention a company called exospeed? and said they can do it for $80-100 but I have to wait till tuesday to call.
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Old Sep 6, 2009 | 04:50 PM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

Originally Posted by supersi00
Just buy after market pistons than u can have any compression u want to have
I would but the rods have already been milled to fit the pistons and I'm already setup to use the CTR pistons which I also have already purchased so I'll use the stock rods before I get a new set of pistons.
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Old Sep 6, 2009 | 05:01 PM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

Also has anyone ever used teflon "buttons" to hold the wrist pin in. Looks like its used in racing applications but what about daily driven?
example: http://www.vwparts.net/mm5/merchant....&Category_Code=
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Old Sep 6, 2009 | 05:19 PM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

i am wondering this also bc i have ealge rods and am about to order my ctr pistons nad its going to suck if i cant use the 1000 dollar rods and crank i have bc of that i blew my money on the ballin *** rods and crnk so i could get ctr's, i knew about milling them down but not about the wrist pin. i emailed eagle asking them just waitin on a responce
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Old Sep 6, 2009 | 05:39 PM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

Forged rods and CTR pistons are not a great combination. Try to save up and get wiseco pistons. They are one of the cheaper brands with very good consistency in terms of diameter, weight, and finish.
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Old Sep 6, 2009 | 06:22 PM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

im not wanting to blow another 600 700 on pistons when i dont have to do to get the comp i want u know.
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Old Sep 6, 2009 | 06:31 PM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

Originally Posted by yellowjdmcrx
im not wanting to blow another 600 700 on pistons when i dont have to do to get the comp i want u know.
What about the RS machine pistons. They have the wrist pin lock groove dont they?? They shouldn't cost you much at all. I believe they sell stock bore for less than $200 a set. I believe they even have CTR pistons.
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Old Sep 6, 2009 | 06:31 PM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

Originally Posted by yellowjdmcrx
im not wanting to blow another 600 700 on pistons when i dont have to do to get the comp i want u know.
Lol, 400 to 500 is not 600 to 700. Also, are you trying to make power or a compression number?
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Old Sep 6, 2009 | 06:33 PM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

Originally Posted by dlaub25
What about the RS machine pistons. They have the wrist pin lock groove dont they?? They shouldn't cost you much at all. I believe they sell stock bore for less than $200 a set. I believe they even have CTR pistons.
They have the wrist lock pins on 84 mm and above, only.
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Old Sep 6, 2009 | 06:37 PM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

Email our sales at sales@exospeed.com Let us know what kind of pistons. We can get the non-floating pistons machined to take floating pins.
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Old Sep 6, 2009 | 06:39 PM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

Originally Posted by mar778c
They have the wrist lock pins on 84 mm and above, only.
Well scratch that idea. Wonder why they did that?


Anyway, In my experience Exospeed=Good People.
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Old Sep 6, 2009 | 07:09 PM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

Originally Posted by ExospeedAMcrx
Email our sales at sales@exospeed.com Let us know what kind of pistons. We can get the non-floating pistons machined to take floating pins.
I did and you all just replied back saying you cant. If I send you the pistons can you get someone to machine it?
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Old Sep 6, 2009 | 07:26 PM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

Whats the point in Eagle rods/crank if you are running cast pistons anyway?
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Old Sep 6, 2009 | 07:38 PM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

Originally Posted by Eli2
I did and you all just replied back saying you cant. If I send you the pistons can you get someone to machine it?
maybe it was one of our sales guys that wasnt familiar that we can get that done.

We can get it done, Just have to check the price on tuesday.
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Old Sep 6, 2009 | 07:59 PM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

Originally Posted by 95 integra
Whats the point in Eagle rods/crank if you are running cast pistons anyway?
Well for me I picked up a set of I-beams for pretty cheap otherwise I'd use the stock ones and get some ARP's, also I would get a set of new pistons BUT my I-beams have already been milled to fit the CTR's so I'm in a bit of a pickle.
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Old Sep 6, 2009 | 08:00 PM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

Originally Posted by ExospeedAMcrx
maybe it was one of our sales guys that wasnt familiar that we can get that done.

We can get it done, Just have to check the price on tuesday.
Whew thanks alot man I was getting kinda bummed there for a sec. Yea I'll checkback with you tuesday.
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Old Sep 8, 2009 | 07:53 AM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

Bump
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Old Sep 8, 2009 | 12:35 PM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

its $128 for the machining of OEM pistons to accept floating pins and locks. that includes the spiral locks also.
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Old Sep 8, 2009 | 05:59 PM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

Originally Posted by ExospeedAMcrx
its $128 for the machining of OEM pistons to accept floating pins and locks. that includes the spiral locks also.
Awesome awesome. So how do I go about shipping and return shipping them?
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Old Sep 8, 2009 | 07:13 PM
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Default Re: Machining wrist pin lock grooves into CTR pistons for forged rods?

yeah would like to know this also,bc that will still put it below buying a set of forged pistons, i might just use my stock b16 rods with arp bolts
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