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What's the root cause mark?
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Advice required: 2006 Manual vs 2008 low mileage F430
- Thread starter Knightwing23
- Start date
The rod bolts stretch and/or the rod caps break. Said builder is of the opinion that the bolts and caps used are on the edge for a flat plane crank application with this rod ratio.
Mike01606
Active member
There’s been a couple on FChat in the last year or so.
As above “I’ve got this knocking noise” then “I need a new engine” then tumbleweeds......
Should be fairly inexpensive to check and shouldn’t be a cause for concern now a known issue.
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Wonder if the factory has enough occurences for it to be a registered issue yet and / or any upgrades took place for the 458.
It's not something that was triggered as a known failure mode in the development program according to my sources.
Having said that there is a dead 458 with significant engine damage that everyone is keeping quiet about.
It's not something that was triggered as a known failure mode in the development program according to my sources.
Having said that there is a dead 458 with significant engine damage that everyone is keeping quiet about.
458 rods are 3 mm longer meaning the engine has a better rod angle mid-stroke. They also have different rod bearings.
The F430 Challenge has stronger rods and bolts.
The rod angle/ratio would have been fully understood at design time. Either weight optimisation went too far, or the bean counters did...
The F430 Challenge has stronger rods and bolts.
The rod angle/ratio would have been fully understood at design time. Either weight optimisation went too far, or the bean counters did...
Mike01606
Active member
Possibly one of the 200 V8’s covered by the crankshaft recall?
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No the crankshaft issue was a manufacturing defect where as these guys are talking connecting rod cap bolts.
The 458 is a bore and tolerance related issue exacerbated by a lack of use...so far there’s more to come out on that one.
The 458 is a bore and tolerance related issue exacerbated by a lack of use...so far there’s more to come out on that one.
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Could be a GD&T stack-up issue which is Ferrari’s Achilles heel IMO.
Sourcing challenge parts could well be the best route.
Mike01606
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Red card shown!....I’m sat a work looking at a tolerance stack issue ATM so please can we get back on topic [emoji3]
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Sorry Mike - believe me I feel for you...
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Mark the FIA series GT2 car developed from the GTC and was de-stroked to get under the 4.0L so if anything that would make things worse - does the builder you have spoken to have any experience of the race engines?
The GT3 car meanwhile was standard mechanically but tuned to 550hp hence my take on a good road tuning limit being circa 520/30 hp
Would be good to see how the shorter stroke motor held up...
The F136 GT 4.0 made circa 439 bhp at 7k RPM 
It's worth noting that a less than ideal rod angle can still be made to rev - in another car I have a 4cyl 2.0 build on a totally one off forged crank, rods, and pistons that is a shade under 2400c with a 7500 limit, but the downside is heavier components and increased friction on the thrust face. I run a Cosworth developed Compacted Graphite Iron block from a WRC car to take the abuse!
Race cars of course have a lifespan of hours...
It's worth noting that a less than ideal rod angle can still be made to rev - in another car I have a 4cyl 2.0 build on a totally one off forged crank, rods, and pistons that is a shade under 2400c with a 7500 limit, but the downside is heavier components and increased friction on the thrust face. I run a Cosworth developed Compacted Graphite Iron block from a WRC car to take the abuse!
Race cars of course have a lifespan of hours...
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Agree,
I love short stroke motors and especially speed of response which is a hangover from my two stroke tuning days and worship of Yoshimura and Mine's engines. It would be interesting to build a stroker version of the 430 engine.
My 8C is 4.7 litre but not flat plane crank so it behaves very differently.
I love short stroke motors and especially speed of response which is a hangover from my two stroke tuning days and worship of Yoshimura and Mine's engines. It would be interesting to build a stroker version of the 430 engine.
My 8C is 4.7 litre but not flat plane crank so it behaves very differently.
Mike01606
Active member
Sorry OP ....We’re so far off topic now we’ll soon be smack on again [emoji4]
This is the vid from one of the FChat posts.
Usually cylinder number 2 was what one of the techs said.
https://youtu.be/HL4K__MqlJY
It needed a new engine but the guy disappeared so there were no update after that....
This is the vid from one of the FChat posts.
Usually cylinder number 2 was what one of the techs said.
https://youtu.be/HL4K__MqlJY
It needed a new engine but the guy disappeared so there were no update after that....
Knightwing23
New member
Hi Guys
Thank you all for the advice, really appreciated.:grin: The black manual was sold, so I'm on my way to pick up the Rosso one tomorrow morning. Very excited. Will post some pic's once I get back.
Thank you all for the advice, really appreciated.:grin: The black manual was sold, so I'm on my way to pick up the Rosso one tomorrow morning. Very excited. Will post some pic's once I get back.
sssdu01
Active member
I like the way he was reving up the engine .......... it would have solved the ticking/rattle, as it would go bang and then be very quiet, with one of the rods poked out the side of the block :laugh:
Knightwing23
New member
milkshaker0007
Active member
Very very nice, you must be well pleased:thumbsup: