FRS300 Rebuild Has Begun..Blown Motor to Built Monster

[King Tut]

Originally Posted by dabocx

Its the subtle way of kicking you out of the thread....its prob because your not going to tx2k

At this point, he will probably never make it either.

I did just yesterday read about FL2K13 in Bradenton later this year. There are only two things in Texas, and neither are fast cars. At least I hit the drag strip on Saturday.

[JerryMichaels7]

time slip or it didn't happen ^

[Calum]

Originally Posted by mid_life_crisis

This seems counter-intuitive. Can you please explain?

Think about the shape of a connecting rod, during compression of the rod all of the force is distributed along the rod half of the big end bearing. When the rod is in tension all of the force is distributed along the cap half of the big end bearing. If the bolts are parallel to that force, they take all of it. By rotating the break line for the cap, the bolts no long take all of that force in tension which can make the overall assembly stronger. This wont really help the engine make more power at the present rpm limit, but it will make the rods able to withstand higher rpm as they'll be less likely to separate while trying to slow the piston as it approaches top dead center.

[Calum]

Originally Posted by mid_life_crisis

From a basic mechanical perspective, in a standard arrangement, the stress on the rod bolts is primarily stretch (lengthwise) from the part of the cycle when the crankshaft is pulling the rod/piston down in the cylinder. The rest of the time the force is squarely against the base of the connecting rod, either from the crankshaft pushing up or the piston pushing down. Under those conditions, all the bolts are doing is holding the rod end in position so the bearings don't move.
Tilting the rod end adds shearing stress (across the bolt), so yes, it would seem that this layout is harder on the bolts. Depending on the angle, it could also put shearing stress on the bolts whether the force is from the crank pulling or the piston pushing.

I see what you're saying here. What you need to add to that though, is that the forces aren't directly added together and the sheer stress is less then if the cap was perpendicular to the forces. Also the bolts should be able to handle that sheer better then the tension.

If you add in the cracked caps that are common on powdered rods, there is actually very little (comparative) sheer stress making it to the bolts.

[Frs300]

Originally Posted by Andy@FA20Club

.....

you got access to the pics of my car that toni has? its killing me i want to see the car already. Im about to drive down just to look at it

[Andy@FA20Club]

I'm in the office this week to get these Flex Fuel Kits out.

[Frs300]

Originally Posted by Andy@FA20Club

I'm in the office this week to get these Flex Fuel Kits out.

damn no love at all lol

[Andy@FA20Club]

Originally Posted by Frs300

damn no love at all lol

j/k we got you.

[Frs300]

Originally Posted by Andy@FA20Club

j/k we got you.

snap snap got few 100 ppl waiting. im kidding...must be sending out a lot of flex fuel kits if your at the office this late.

[lexusb3]

I'm on the list for one lol flex fuel kit

[dabocx]

Derailing this thread.......Dates for Tx2k are up

[Frs300]

Originally Posted by lexusb3

I'm on the list for one lol flex fuel kit

they will run out before you get one

[King Tut]

Originally Posted by JerryMichaels7

time slip or it didn't happen ^

[Frs300]

Originally Posted by King Tut

not bad