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**JET** · 08-11-2005

The longer rods will give the rod a shallower angle. This reduces side load on the pistons, and as John stated, increases the dwell time. Dwell time is good in an NA application, you can make more power. In a FI engine with high boost, it is not desirable since we are fighting detonation and that gives more time for detonation to occur.

The rod ratio of the 2.4 is 1.5 and the long rod version is 1.56. 1.7 is considered ideal for a NA engine. I really don't see a big enough difference with the long rod version to warrant the extra cost. It is less than a 10% difference in rod ratio and there are some bad effects too.

08-11-2005	#3
JET Is funding Exxon. Join Date: Oct 2003 Location: Ham Lake Drives: like a bat outta hell! Posts: 7,983	Re: Long rod motors? The longer rods will give the rod a shallower angle. This reduces side load on the pistons, and as John stated, increases the dwell time. Dwell time is good in an NA application, you can make more power. In a FI engine with high boost, it is not desirable since we are fighting detonation and that gives more time for detonation to occur. The rod ratio of the 2.4 is 1.5 and the long rod version is 1.56. 1.7 is considered ideal for a NA engine. I really don't see a big enough difference with the long rod version to warrant the extra cost. It is less than a 10% difference in rod ratio and there are some bad effects too. __________________ Is burning corn and stayin' warm! My motorcycle is stock and reliable, my Talon is neither!