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Forged conrods manufacturing
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Coco_Lev  



Joined: 04 May 2020
Posts: 21
Location: France

PostPosted: Wed Jun 03, 2020 1:23 am    Post subject: Forged conrods manufacturing Reply with quote

Hi everyone,

A member of the club had asked me if it would be possible to make forged conrods.
Of course, I can provide you a set of real 4340 steel, shot peened conrods for 390€ incl. shipping to UK (but without the bolts ~80€ of ARP). To launch a production we need to order 10 sets, as the forging matrix is quiet expansive to build.
This can seem really cheap parts, but there is no marketing on the product, neither intermediate reseller. Here is the only difference of price with a 1000$ set.

Is there anyone interested?

Infos there : https://www.mespiecesauto.com/en/bielle-origine-ou-bielle-forgee-avantage-comment-les-choisir-a-quoi-faire-attention/


Last edited by Coco_Lev on Tue Jun 09, 2020 12:48 am; edited 2 times in total
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gegge  



Joined: 27 Jul 2007
Posts: 1084
Location: Sweden

PostPosted: Wed Jun 03, 2020 3:53 am    Post subject: Reply with quote

I´m interested.
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safe  



Joined: 18 Mar 2017
Posts: 171
Location: Sweden

PostPosted: Wed Jun 03, 2020 4:50 pm    Post subject: Reply with quote

I'm in!
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Juho  



Joined: 03 Oct 2018
Posts: 125
Location: Finland

PostPosted: Thu Jun 04, 2020 12:26 am    Post subject: Reply with quote

intrested.....
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vonmoogen  



Joined: 12 Feb 2013
Posts: 7
Location: UK

PostPosted: Fri Jun 05, 2020 12:06 am    Post subject: Reply with quote

Id be interested too
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Coco_Lev  



Joined: 04 May 2020
Posts: 21
Location: France

PostPosted: Sat Jun 06, 2020 2:30 am    Post subject: Reply with quote

I've got a fifth person interested. We need 5 more now.
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Coco_Lev  



Joined: 04 May 2020
Posts: 21
Location: France

PostPosted: Wed Jun 10, 2020 4:57 pm    Post subject: Reply with quote

The conrods has been designed, and ordered to the factory this morning

The weight should be near 570g without the bolts. It corresponds to 600-610 g with the ARP bolts. This is an estimation. We hope the parts to be available within 2 months.
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safe  



Joined: 18 Mar 2017
Posts: 171
Location: Sweden

PostPosted: Wed Jun 10, 2020 5:05 pm    Post subject: Reply with quote

Coco_Lev wrote:
The conrods has been designed, and ordered to the factory this morning

The weight should be near 570g without the bolts. It corresponds to 600-610 g with the ARP bolts. This is an estimation. We hope the parts to be available within 2 months.


Cool, that is light!

Original is 877g and the Aliexpress H-rods I have are 707g (all with bolt I think, 99% certain it were).

What kind of power levels have you designed them for?
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Coco_Lev  



Joined: 04 May 2020
Posts: 21
Location: France

PostPosted: Wed Jun 10, 2020 8:12 pm    Post subject: Reply with quote

safe wrote:


Cool, that is light!

Original is 877g and the Aliexpress H-rods I have are 707g (all with bolt I think, 99% certain it were).

What kind of power levels have you designed them for?


Previous conrods manufactured has often been set up on >400hp 2L 4cylinders engines without any concern.
Some of these engines have reached 600hp without bending the conrods.
I could give more precise informations if you desire to reach such levels of power!
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safe  



Joined: 18 Mar 2017
Posts: 171
Location: Sweden

PostPosted: Wed Jun 10, 2020 8:43 pm    Post subject: Reply with quote

Coco_Lev wrote:
safe wrote:


Cool, that is light!

Original is 877g and the Aliexpress H-rods I have are 707g (all with bolt I think, 99% certain it were).

What kind of power levels have you designed them for?


Previous conrods manufactured has often been set up on >400hp 2L 4cylinders engines without any concern.
Some of these engines have reached 600hp without bending the conrods.
I could give more precise informations if you desire to reach such levels of power!


400 is my target!
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Kenodog  



Joined: 25 Jun 2003
Posts: 2584
Location: Vancouver,B.C.

PostPosted: Thu Jul 02, 2020 4:30 am    Post subject: Reply with quote

Well NOW I see this, right when my motor is nearing completion, lol.
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safe  



Joined: 18 Mar 2017
Posts: 171
Location: Sweden

PostPosted: Thu Jul 02, 2020 4:36 am    Post subject: Reply with quote

Coco, valves looks hard to find, for the NA 924 (I need exhaust valves right now).

You don't have connections that can make some nice stainless inlet and exhaust valves, maybe even 1 or 2 mm oversize?
I would by at least 2 sets.
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Cédric  



Joined: 27 Aug 2004
Posts: 1994
Location: Sweden

PostPosted: Thu Jul 02, 2020 5:03 am    Post subject: Reply with quote

How have you done with the piston cooling oil squirter hole? Are there any sets extra available?
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MikeJinCO  



Joined: 08 Jun 2010
Posts: 929
Location: Maysville, Colorado

PostPosted: Sun Jul 05, 2020 10:32 pm    Post subject: Reply with quote

Safe-- SI valves have both 924 and 931 valves in their catalog.
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Poco a Poco, #033 '78 Vintage racer, SCCA Dp-81
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safe  



Joined: 18 Mar 2017
Posts: 171
Location: Sweden

PostPosted: Sun Jul 05, 2020 10:56 pm    Post subject: Reply with quote

MikeJinCO wrote:
Safe-- SI valves have both 924 and 931 valves in their catalog.


Not anymore... They cant do 9mm stems.

Edit: They have no 9mm blanks was their specific answer.
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