Well that's the real kicker aint it?
As a bystander you can never really tell exactly what happened. That's why people blame certain products when in all actuality the failure was likely due to incorrect bolt preload, overstretch, poor machining and/or a combination of things.
I've seen an H-beam break, it was in a Hayabusa..... well until it windowed the block.
Since we're talking Eagle rods here... might as well throw Manley's h-beams in there too. They're damn tough as well and many builders use them in their crate motor race engines for that reason. Timex connecting rods.

Yep, the SPS "multiphase". I didn't mention it because I wouldn't recommend it to anyone for the money.
Last I heard, The Professor (WJ) was running the L19 bolts in his motors..... he's a big ARP spokesperson. So I feel pretty confident in using them too.
The 504 I mentioned in the other thread.... L19's in that engine too. No problems there.

I think the "match the bolt to the performance level" thing is nice in theory but I can't say I follow it for the real world. If there's one place in an engine I'd rather have "too much" it'd be at the rod cap.
A local dirt track shop, which happens to be owned by a good friend of mine, uses the L19 in all their motors.... IMCA Modifieds and up (those using the Scat I-beam option and better) and according to him, that switch has virtually eliminated catastrophic failures in these engines which are usually on the scale of 500 hp and up.
From what I've seen, the same could be said for drag guys. Especially those building engines on more extreme budgets.... trw forgings, h-beams, cast cranks and lots of nitrous is kinda typical of that sort.

when "too much is just enough:
http://community.webshots.com/photo/...78570738pTwont
http://community.webshots.com/photo/...78570617TCRoWK



-Mindgame

 

Mindgame,

You to must be a Hayabus owner as am I. I can vouch from experience that when the Busa starts making power over 425hp the stock rods decide to exite the case! I know because I have little tinny rods in a tote and the count should be four but infact there is five and case material. I would love to send to anyone to enjoy!

I guess it was MC EXpress Turbo kit to blame for just making to much power along with that 1363cc MTC big bore! LOL!

See Ya,
Jim

 

Game,

I like to err on the side of stronger all of the time. There is a point though that the rod bolt is stronger than the rod in which case you will find the next weakest link. That's the point really. All of our stroker kits come with upgraded rod bolts, the reason being that the stock bolts are all the week links in the packages.

Good pics, see people do break (or bend) H-Beams.

On the Hayabusa side, other than I followed a guy to the track yesterday who couldn't go over the speed limit and it was getting on my nerves......

Go pick up the latest Racecar Engneering, a company in england did a 1912cc Busa motor for hill climb cars. It started out getting about 270hp and 180 ft lbs. Dry Sump, widened bore spacing, tall deck CNC block (billet) all with a stock head. It's a really neat story.

 

OldSStroker,

thanks again, i realize the block has it's limitations, but i am just trying to make the most of the original block that came in the car. it does seem the folks in the 4th gens that want to go faster still, are going the route of the sbc.

either way i will stay efi! if i can't take it on a highway cruise then i have gone too far with the car.

carillo rods ...huh???? hmmmmm


this is a great thread, no pun intended

 

would love to read more about that busa engine :P

i really find them interesting, gotta be about the only 4-banger i respect

read into it a lot, think the turbo kits are amazing, up to 400 horses ont he stock displacement and head

then found stuff bout going to 16xx displacement without spacing the bores..... all very cool

has to be about the ultimate go-fast toy huh?

too bad i'm just a poor college student with the poor-mans vette

 

Well, by no means am I an experienced engine builder but I will offer my "non-complex" thoughts on rods....

Semi-budget strong rod....Eagle H beam
For what taner is doing (or any extreme build).....Oliver billet

Will other rods work? Sure. IMO at the point where Eagles are not strong enough, I would go to the Oliver billet. Exactly what I am doing on my new motor.

BTW, John Eaves "bent" and Eagle H beam a few years ago in his blown LT1.....strong for the money tho.

JMO
Jason

 

No Busa for me Jim but I have ridden a fair share of really quick ones. I'm more of a GSXR1000, 750 kinda guy as I feel they are better suited to the type of riding I do.... mostly Track Day stuff.

Bret,
I saw that article at the local coffee shop the other day... you know, the place where you read all the magazines but never buy one.
Impressive, but man the machine work.... I wasn't too impressed with that from a cosmetic standpoint. Although 300 hp from a 400 lb 2-wheel rocket would be quite the ride, this is the one case where I can honestly say that 140-160 hp in a tad lighter bike is quite enough for me.

Lots of innovation from the bike builders... look at the new gixxer 1000.... impressive.

Jimmy,
Save the pennies and stay in school. Patience grasshopper.

-Mindgame

 

Yeah.. like too the GSX1000R better than the busa and with carbon fiber wheels.. uuff... its a crazy goat... power wheelie in 3rd