forged pistons and rods for the 2.5 24v - Alfa Romeo Forum
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(Post Link) post #1 of 17 Old 19-01-14 Thread Starter
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Crazed forged pistons and rods for the 2.5 24v

Hi guys is there any company that make forged pistons and rods for the 2.5 24v i can only find pistons and rods for the 12v and i sure that the 12v pistons cant be used in the 24v but are the rods the same ?

P.S
I want to keep the 2.5 displacement
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Hi,

You can ask this guy "[email protected]"
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can any one tell me if the 2.5 and the 3.0 rods are the same ? some feedback will be nice
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Yes they are. I sent you a pm.
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Yes they are. I sent you a pm.
The 2.5L 12V same conrod to 2.5L 24V or 2.5L same conrod to 3.0L? Please share
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Any rods that were made for any alfa V6, be it 12v or 24v are technically the same. Some will tell you that the early 12v V6 were handed, and that the gta ones have extra lubrication holes and different part numbers but they are fundamentally the same.
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Dimensionally, all the rods from 2.5-3.2 are the exact same. But there could be minor differences.

You can get forged rods from maxspeeding (equal thickness on small end and big end) or THS ( proper offset for small end).

24V forged pistons can be had from CPS Pistons in Italy.

The stroke for the 2.5 is so short, I'm not sure why you need forged rods, unless you run it to 8000 rpm regularly.

If you keep it to around 7500 rpm, and have everything (crank, pistons, rods, flywheel, pulley) balanced, there should be no problem with stock parts. Even the GTA has a relatively short stroke....err...about 78mm? That's nothing compared to the Alfettas with 90+mm of stroke. Hell even most square engines 2.0L engines which rev really high have 86mm stroke.

2006 Honda Accord CL9 Type S 6-Speed
1996 155 2.5 V6, Squadra Tuning, RJR Cams
1995 164 Super 3.0 24V
2001 156 3.0 V6, Jim Kartalamakis 10mm cams,
1987 75 3.2 V6, Jim Kartalamakis 10mm cams, Stage2 Injectors, Autronic SM3 & CDI 500R
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I am looking to fit a super charger to the car and like to be on the safe side to give it more boost in a safer way whit a stand alone ecu i have
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any one now where to buy a bracket for the Rotrex C30-94 supercharger to fit near the ac pump or maybe a hole kit i have send some pm to this chap hear https://www.facebook.com/media/set/?...3511251&type=3 but no replay is there some guys who make this type of kits
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You can get forged rods from maxspeeding (equal thickness on small end and big end) or THS ( proper offset for small end).
Excuse me, but what do you mean with "proper offset for small end"? I'm about to buy a set of THS rods for my 3.0 12v turbo with CPS pistons...
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I have a brand new set of ZRP forged rods for the V6 engines for sale, if anyone is interested.
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Does it fit the 3.2?
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Yes it does.
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Il Busso,

The small end of the THS and stock rods are narrower than the big end. The small end of both rods are offset to one side. So you should be fine, you don't have to worry about it. Ask Jim K. for more details.

Now if you get the Maxspeeding rods, the width of both the small and big end are the same. But according to Jim K, because the width is the same there "should" be no worry either, but in this case he is not 100% sure.
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Spresv,

Have you shown this to JimK? He is in Athens too. Surely you know him. But he is a 1.8T guy these days.
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Quote:
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Spresv,

Have you shown this to JimK? He is in Athens too. Surely you know him. But he is a 1.8T guy these days.
No need to ask anyone,you can just let your fingers do the walking and check Eper

CONNECTING ROD early handed numbers were 60807877 and 60807878 which were substituted by ONE part number 60816266 which later became 60662848 simples
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I was talking about the presence or the absence of the offset in the rod, not about the stock rod, stock rod part # or replacement. The manual says you should pay attention to the rod offset, but there are are some who have extensively raced and don't give 2 hoots about the rod offset. One of them is a famous Alfa cam builder.

The problem is some aftermarket rods do not have rod offset. Is it ok or is it not ok? I don't have the answer myself.
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