F6 310 Vs 335 Gt Raceway

[cranny]

I Have a degree in Accounting and a Masters in Economics so I think we are going to have diffrent views on the way corporations operate.

[01txr]

agree 100% with bunna

Also forgot to mention top fuel Also use alloy conrods, with these engines making well

Over 5000hp I would have to know the pressure the rods are taking.

Just off memory a standard combustion engine generates 2-3 ton and a high performance engine over double that.

I recall the old turbo Indy cars making over 1000hp 13500 rpm and 8 tons of downward force applied every combustion.

So 5000hp plus hp would be a lot more than 8 ton of pressure also the rate that these TF cars accelerate/de-accelerate quickly load up then unloading.

Pretty amazing stuff for weaker cheaper alluminium don't you think cranny.

So why do v8 supercars use Titanium rods not aluminium.? It's because the alluminium fatigues quicker than steel And Titanium.

TF rods are replaced regularly because of the fatigue from being stretched.

A steel rod or titanium rod would not survive in a TF as it wont stretch/contract giving a dampening affect of oppossing force with rod traveling at speed with applied load and weight. The weight of the rods is also critical as the less reciprocating mass the quicker

The mass can change direction with less force.

A v8 sc does not have that extreme amount of load on it's conrods but has to be able to perform over long periods, they can't use alloy rods for there strength as it would fatigue.

So next best thing is Titanium.

Cranny you also implied that i6 ford taxis get huge kilometers from engine and because that theory of yours the cast iron engine block must be stronger.

That is so far from the reason why they do get the k's.

The reason being is they are run constantly not start stop. Engine start up is the worst time for wear. Factors like oil supply and operating tempetures are the offending wear problems.

On top of that they are 99% of time driven very slowly as time equals money and driving them very easy helps with fuel consumption and longevity of the drive line.

Something you would not be aware of is how bad a long i6 is on head gaskets, reason is because alloy cylinder head expands and contracts at quicker rate than cast iron and causes a grinding effect on gasket.

The old Pre AU Falcons with there fibre head gaskets would blow at approximately 200k. Because of this problem, since Ford has changed to the Steel gasket it does not suffer the 200k known problem of the earlier fibre gasket.

This head gasket problem also not as bad with Taxis again because of constant running and operating temp held.

I suggest you learn a bit more cranny before making statements on things you don't know much about.

Look at and study the pictures posted in this thread. You will find that the coyote is very good. Yet it can be better also by use of billet main caps not cast, the engine block skirts to have the horizontal bolts to the main caps as per i6 sump to main caps.

And a step further would be to machine block flush with centerline of crank and run a 1 piece billet alloy main cap.

This would help strength wise as all mains tied together and would not require having to fit main girdles for extra strength.

Also fitting of stronger billet rods as the factory ones are good but not ideal for huge power.

One area that use to be a problem with early alloy blocks was the cast iron cylinder liners, they use to move and cause problems and some manufacturers chose to go with treating the alloy bores to avoid the problems of liner movement.

This resulted in excess wear and making the blocks a throw away item as to expensive to bore and treat again.

With the design of the cylinder liners now and the fitting processes the problems are fixed

Maybe that's why you think the alloy blocks are not as strong from the history of them.

The gen 3 designed was a throw away item as they could not be rebored and could only accept a 5-10thou hone.

Can't wait to see the potential of this coyote, we will see great things from it.

[Dagabond]

planes get rebuilt and maintained on a regular basis so you really cant bring planes into this equation.

not on this planet...if you knew the real story behind that myth you would never fly again.

[discostig]

Plane engines are actually full of gerbils in wheels! Gerbils have high hp/weight ratio.

When you see flocks of birds get mulched by the engines it's actually due to the gerbils being very hungry and eating them as they pass through. Planes have to stop as this ruins the hp/weight ratio previously mentioned.

Edited 31/12/10 01:45 AM by -SteveR-

[beastF6E]

Top fuel engines only have to last one trip down the strip

[cranny]

Gerbils are good for other things as well the majority of the HSV drivers would know the other use.

[discostig]

Top fuel engines only have to last one trip down the strip

Yeah my understanding was that they are only designed to last a few seconds basically. Harsh.

[01txr]

Pretty sure TF's get a meet out of the rods, but even still yes very harsh and exspensive.

that's what they where getting back when they where running 5's, maybe now running 4's it is only 1 run.

Gee we are comparing Top Fuelers & planes now with the Coyote, dam this engine must be good.

Heres a bit of Trivea for you cranny & I6 faithfuls

TF = Alloy Block

Coyote = Alloy Block

I6 = Cast Iron Block

TF = Steel Crank

Coyote = Steel Crank

I6 = Cast Iron Crank

TF = Forged Alloy Rods

Coyote = Forged Steel Rods

I6 = Plastic Rods (Cast iron Rods)

TF = 8 Cylinders

Coyote = 8 Cylinders

I6 = 6 Cylinders

TF = 2 Cylinder Heads

Coyote = 2 Cylinder Heads

I6 = 1 Cylinder head

TF = 32 Valve

Coyote = 32 Valves

I6 = 24 Valves

TF = Orsm

Coyote = Great

I6 = Good

See any sort of pattern there.

One thing most of us will agree on is

All GM = Sh*t

Here are the high detail pictures of the cast iron broken rod of mine I said I would post up.

Take notice how the grain goes everywhere.

also how inconsistant the iron is, some of it is very dense and some very light.

And here is the cause of it breaking

Here is the fix

[Guest XR09]

That rod looks like it had a hairline fissure/crack for a while before it let go completely. Well from the discoloration on one half. Poor little thing did it's best ha ha

And that's one big gerbil wheel

[juggernaut]

Pretty sure TF's get a meet out of the rods, but even still yes very harsh and exspensive.

that's what they where getting back when they where running 5's, maybe now running 4's it is only 1 run.

I've been told they get one run out of them, then sent to the US and resized and then another run, then scrap.