Forged fiat ARROW con-rods 128.5mm
- Thread starter Gtturbo
- Start date
Dan Sarandrea (Phila)
Waitin' On Parts...
Hi Bob,
When FIAT increased the engine displacement of the early car 1300 to the late car 1500, they did so by adding a little bore (from 86.0mm to 86.4mm) and a lot of stroke (from 55.5 to 63.9).
Because of the added stroke, they uprated the con rods of the 1300 to forged con rods in the 1500. So the 1500 stock engine already has very strong forged rods.
You wouldn't need the Arrow rods on a stock 1500.
When FIAT increased the engine displacement of the early car 1300 to the late car 1500, they did so by adding a little bore (from 86.0mm to 86.4mm) and a lot of stroke (from 55.5 to 63.9).
Because of the added stroke, they uprated the con rods of the 1300 to forged con rods in the 1500. So the 1500 stock engine already has very strong forged rods.
You wouldn't need the Arrow rods on a stock 1500.
Dan Sarandrea (Phila)
Waitin' On Parts...
Don't get me wrong, I'm not saying these are not top-notch rods!:angel: Or that they are not worth the money.
I'm just letting Bob know, (assuming he did not know already) that for a stock build 1500, the factory rods are going to be more than plenty.
And since the price works out to about $720 with the wrist pins, there has to be a cost-benefit analysis done. For example, that money spent on the rods certainly gets you a strong and light rod, but in and of itself does not add any economy, horsepower, torque, or longevity to a stock engine. It only makes sense when combined with other internal performance mods or if you were going to a turbo. OTOH, $720 would buy (just as an example) an Allison coated header, which has been dynoed to show that it adds 6-8HP overall and favorably flattens out the torque curve.
I'm just letting Bob know, (assuming he did not know already) that for a stock build 1500, the factory rods are going to be more than plenty.
And since the price works out to about $720 with the wrist pins, there has to be a cost-benefit analysis done. For example, that money spent on the rods certainly gets you a strong and light rod, but in and of itself does not add any economy, horsepower, torque, or longevity to a stock engine. It only makes sense when combined with other internal performance mods or if you were going to a turbo. OTOH, $720 would buy (just as an example) an Allison coated header, which has been dynoed to show that it adds 6-8HP overall and favorably flattens out the torque curve.
