Got Hole?

[fivebob]

For those that can't be bothered to count and to clarify what 36-2 means I've made this pic.

[fivebob]

Oh dear, looks like my reasonable questions are not going to be answered

I'll give it another 24 hours for Raw Motorworx to reply before I assume that they don't want the answers known and I start answering the questions myself

[spencer]

not sure if this is relevant.. but the caldina is actually running a Yamaha engine.

Its not relevant, yamaha engine?they have been helping toyota with heads for years they dont make the whole engine. I have a shitty 1g-ge from the late 80's that has yamaha written on it and the 20v heads look similar to my bikes

[Inane]

Oh dear, looks like my reasonable questions are not going to be answered

I'll give it another 24 hours for Raw Motorworx to reply before I assume that they don't want the answers known and I start answering the questions myself

I eagerly await your answer...

although it sounds like I may owe
CaldinaGTT a bit of an apology for jumping to conclusions...

the "jury" awaits the testimony of the expert witness.

[vvega]

asumptions are bad especially when based on the facts these guys have provided

v

[kilowatts]

But what ever the case you drove to long on the car caldina gtt to put blame on anyone. Paw motorworx hasn't been around long enough to establish weither they are experts or cowboys . But a few customer cars i have seen i think they maybe carrying six shooters.

[caldinagtt]

ive done like 2000 k since i had it done and 1000 of that was embeding the clutch i hardly ever drove it as it was sucking to much gas and i dont need to drive my car to work everyday. and there was no rev limit set on it i asked twice for them to pout one on at 7 g but it never happened.

[vvega]

ive done like 2000 k since i had it done and 1000 of that was embeding the clutch i hardly ever drove it as it was sucking to much gas and i dont need to drive my car to work everyday. and there was no rev limit set on it i asked twice for them to pout one on at 7 g but it never happened.

jeee i wonder if that had anything to do with why it popped

there ya go fivebob assume away

v

[Dell'Orto]

ive done like 2000 k since i had it done and 1000 of that was embeding the clutch i hardly ever drove it as it was sucking to much gas and i dont need to drive my car to work everyday. and there was no rev limit set on it i asked twice for them to pout one on at 7 g but it never happened.

So by that I take it you went past 7k rpm to find out? And 7500? And 8000? etc etc

[CozmoNz]

monster tach goes to 11 bro... wondered if shed get there

[fivebob]

ive done like 2000 k since i had it done and 1000 of that was embeding the clutch i hardly ever drove it as it was sucking to much gas and i dont need to drive my car to work everyday. and there was no rev limit set on it i asked twice for them to pout one on at 7 g but it never happened.

jeee i wonder if that had anything to do with why it popped

Possibly, but the default rev limit is 8500. So, unless it was set higher by the installer, it is below the known failure point of 3S-GTE rods. Also the maximum rpm using a Motronic signal is 9000 which is still unlikely to cause rod failure unless it was held there for extended periods of time.

there ya go fivebob assume away

I prefer not to make assumptions. Which as you should know are the mother of all fsckups. So assuming that high RPM was the reason for failure would IMHO be a big mistake. Though it would be easy enough to check if it was rod bolt failure, which is the most likey thing to fail at high rpm (but that's just an assumption )

Regardless of this, surely it's the responsibility of the tuner to set what they consider to be a "safe" rpm, especially if the customer repeatedly asked them to set one at 7000rpm and in light of the statement

this car had a few problems, and we made sure it will be safe

BTW I'm still waiting for some responses to some queries I've raised elsewhere about how the Haltech system works so I can at least make some semi intelligent comments as to it's suitability to run the Caldina's 36-2 trigger system, so my "answers" will have to wait for a little while longer.

[vvega]

my e6m always defaulted to max rpm

so on the 20v setup that was 16k

id like to get my hands on the left overs for a good look normally dont take to figure it out with a pile of broken bits figuring out what left first

v

[fivebob]

my e6m always defaulted to max rpm

so on the 20v setup that was 16k

The E6X default map is set to 8500, so the tuner has to change this to go higher, and the motronic trigger limits it to 9000rpm max regardless. As it's on the main setup page, the tuner can hardly say they didn't know what is was set to, and by inference they must've considered that to be a "safe" rpm.

id like to get my hands on the left overs for a good look normally dont take to figure it out with a pile of broken bits figuring out what left first

If what has been posted is even close to the truth I suspect you'll find the rod bolts intact and not stretched past their elastic limits, but there maybe broken ring lands, or possibly seizure marks indicating bore wash

Without making any assumptions about this specific case I’ll list the causes of rod failure which could be any of the following;

• Rod bolt failure (unlikely)
• Rod failure (unlikely)
• Piston boss failure (unlikely)
• Piston failure from repeated detonation (possible, but unlikely given observed 3S-GTE failures in the past)
• Piston seized caused by oil flashing due to exhaust gas leaking past broken ring lands (possible)
• Piston seized caused by ring lifting due to broken ring lands (possible)
• Piston seized caused by oil dilution from excessively rich mixture (possible)
• ?????

In cases where the piston seizes near the top of the bore on the upstroke this may be enough to bend the rod, and if the piston then freed itself on the downstroke a shortened rod may be enough to cause the piston skirt to hit the crank and disintegrate.

[Malcolm]

I found some pictures of caldinagtt's engine:
conrod


hole


ok they're not actually his, they're from this thread on mr2oc:
http://www.mr2oc.com/showthread.php?t=150486

is your's that bad, caldinagtt?

[Mr Revhead]

thats a special effort

almost as impressive as the 1g-gte i once saw with a conrod wrapped around the crank......