924Board.org

MillsMotorsport · Posted: Tue Feb 14, 2012 12:13 am Post subject:

If they're similar to the Crower rod, I'd be interested in one set for sure, maybe two sets.

Not that I want to "dis" the Diamond pistons that Dan has sourced, but I have a preference for JE forged pistons (rightly or wrongly, I belive they have better metallurgy than most, other than Mahle). So if we had a set of rods that would suit an off the shelf forged piston from something current and widely available (like 86.5 or 87mm Nissan SR20 Turbo pistons) rather than a custom "931" piston.

If we went with a rod to suit the SR20 (for example) piston, then we'd have a huge amount of piston choice in the future and security of supply for many years to come. It would also help the 924 (NA) guys, as NA pistons for the SR20DE are widely available too.

I am rebuilding one, posibly two engines at the moment, so I definatley want one set, and if they suited an "off the shelf" aftermarket forged piston from something else suitable, even better!

the_mad_electrician · Joined: 16 Nov 2009 Posts: 1073 Location: Central Georgia

The problem with using aftermarket pistons from another car is the compression hight on the 924 is pretty high. I looked at several options and didn't find anthing close enough.
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81 924 N/A

2004 Ranger "Edge"

2005 Mazda 6

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

If you're doing custom rods, getting the rod maker to do a custom set with a different center-to-center length is no big deal. I can get the Crower style rod in any length I want with no difference in price. The trick is getting all of the other dimensions correct. So I still say the path to take is to replicate the critical dimensions of a stock rod for anyone not changing out pistons, and then the guys who want to use something other than OEM or the Diamond upgrades I've been sourcing can simply specify the appropriate rod length to accommodate the compression height of the piston they choose to run.
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erstwhile owner of just about every 924 variant ever made

MikeJinCO · Posted: Sun Feb 19, 2012 12:00 am Post subject:

After much mulling of rod bolts vs rods, sign me up for a set of rods.
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Mike

'67 MG Midget Dp
'71 Ocelot Dsr Kawasaki 1000(under rebuild)

tyfighter123 · Joined: 19 Jan 2010 Posts: 551 Location: Colorado

BUMP!
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Porsche 924 1977 N/A
Mustang GT/CS 2007
Porsche 924S 1987 (parts car)(cut up and recycled)
Porsche 911S 1976
Porsche 931 1980
Porsche 931 1980 (parts car)

gegge · Joined: 27 Jul 2007 Posts: 1124 Location: Sweden

Let me know what you want and I´ll do what´s required to get it done!

I´m in for at least two sets if close to stock. And that´s 8 of 30 if you get the point...

$/€ 100 each means $/€ 400 for a set. To clarify. Cheap or not, you decide.
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Carl Fredrik Torkildsen

924 turbo -81 Carrera GT RESTOMOD
924 turbo -80 Dolomite De Luxe
924 -85 DP kit, BBS RS, M030 and tuned engine
924s -86 Black on black turbo with Fuchs

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

Do the rods all have to have exactly the same dimensions, or can guys order up whatever dims they want?
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erstwhile owner of just about every 924 variant ever made

tyfighter123 · Joined: 19 Jan 2010 Posts: 551 Location: Colorado

Dutch924-racer · Joined: 23 Jul 2007 Posts: 1081 Location: The Netherlands

I will pay in dollars then ($ 400 = € 300).
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937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller

gegge · Joined: 27 Jul 2007 Posts: 1124 Location: Sweden

The reason why I wrote $400 or €400 is beacause exporting outside EU is tax exempt (without VAT). No problem for a EU citizen to have them exported to US payng in USD and gamble with the risk of duty on the import as well as value added tax.

The minimum batch is 30 rods with the exact same measurements.
_________________
Carl Fredrik Torkildsen

924 turbo -81 Carrera GT RESTOMOD
924 turbo -80 Dolomite De Luxe
924 -85 DP kit, BBS RS, M030 and tuned engine
924s -86 Black on black turbo with Fuchs

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

MikeJinCO · Posted: Sun Mar 11, 2012 2:29 am Post subject:

Dan

Been out of touch for a bit. Before we go toward option 2 please make sure that both NA as well as turbo pistons are available.
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Mike

'67 MG Midget Dp
'71 Ocelot Dsr Kawasaki 1000(under rebuild)

tyfighter123 · Joined: 19 Jan 2010 Posts: 551 Location: Colorado

I personally would want to do a set of each option if we have enough interest to get two batches.

Dan how does the cost of these custom made rods compare to your off the self rods?
_________________
Porsche 924 1977 N/A
Mustang GT/CS 2007
Porsche 924S 1987 (parts car)(cut up and recycled)
Porsche 911S 1976
Porsche 931 1980
Porsche 931 1980 (parts car)

Min · Posted: Sun Mar 11, 2012 4:03 am Post subject:

I would only be interested in option 1. That would count for two sets from my end(myself and jonus).

Min
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Custom means it didn't come from a box.
1980 n/a with EDIS and Megasquirt II Injection. 7 different colors and counting.