high peak = dead rods ?

[turbin]

In 5th and 6th gear I sometimes see a peak boost of 27-28psi around 3500rpm's.. then it slowly drops to like 25psi at 4500rpms...

should I be worried?


I only notice this sometimes when I want to torque my self up a hill in relatively high speed.

 

[ibizacupra]

yes - be concerned.
bendy/broken rod territory

 

[turbin]

theres no limp after tho. So perhaps this map is good for a hybrid install? + forged rods.

 

[Deleted member 43482]

According to your sig your torque figure is pretty damn high for standard rods, you should get that reigned in a touch.

 

[turbin]

Too bad I like the punch I get from the engine then I am kinda playing with the thought of a hybrid K04, FMIC and forged rods... I think the current map I have is really good.

 

[JamJay]

There might only be so much more 'punching' that it will do though. Is there any way of telling if your internals are suffering due to high boost & torque?

 

[Deleted member 43482]

I prefer straight rods to a massive punch...uprated rods would be the best place to start , after reading around on here it seems like they are the part that fails along with the clutch over 300ish ft/lbs

 

[paul-murphys]

be carefull thats what my car was pushing before my engine blew up, ( dee pics on readers ride) ive got another engine being built at min but if i had uprated rods before i would have saved myself a lot of money on this lump i have brought,

 

[S3 Nattie]

What actually happened to your engine failure wise.

I know everyone says the rods on a LCR - S3 are rated to 300lb-ft but I have never actually heard of someone bending a rod or snapping one. There are loads of engines running your power and are fine.

Is it just hear say on forums

 

[ibizacupra]

no it happens... spikey high torque is a killa
I would say more on 210/225 motors with k04's as their torque spike can be vicious

makes me nervous when I am logging cars and their boost spike is abrupt and high...

 

[turbin]

DOH!

Getting forged rods, is that a big job?

 

[rsmith]

Dammit i and running 308lb/ft with a boost spike of 1.7 bar(24psi) Which i don't this is too bad? is it.My garage did warn me the last time it was in for a service that rods could bend.

I would also be interested to know along with Turbin, on forged rods, big job/cost and Do we really need them?

 

[BoomhaueR]

I too would be interested to know this as my Revo stage 1 boosts to 25psi! I hope it won't blow up

EDIT: Something like these any good? http://www.jbsautodesigns.co.uk/product/928/forged-conrod-with-19mm-wrist-pin
Is that price for a set of 4 or each?

 

[Ronin225]

I would assume its aset of 4 otherwise it would be nearly 1200 quid

 

[JamJay]

I too would be interested to know this as my Revo stage 1 boosts to 25psi! I hope it won't blow up

EDIT: Something like these any good? http://www.jbsautodesigns.co.uk/product/928/forged-conrod-with-19mm-wrist-pin
Is that price for a set of 4 or each?

How about these Boom? I believe that BAM/AMK need 20mm rods.

http://www.thsperformance.co.uk/product/VAG_1.8T_engine_20mm_pins_THSROD-18T20mm

You could email Ollie for a discount code too

 

[ibizacupra]

think of this happening
210 Audi S3 suffered this.. also broke off oil squirter and portion of the base of the cylinder wall on cyl #3 - eak!

 

[JamJay]

think of this happening
210 Audi S3 suffered this.. also broke off oil squirter and portion of the base of the cylinder wall on cyl #3 - eak!

Oh Dear . What's the job like to replace rods Bill? Assuming we're just uprating and they haven't damaged anything.

 

[turbin]

also, is there anything else I should do down there while everything is henging out anyways?

 

[Muttley]

Well, that's graphic enough. At this point the block is scrap, from the bent rod smashing into it I'd guess. Pretty much time for a new engine, I'd have thought.

 

[BoomhaueR]

Is it really necessary to change the rods though. Can't you just smooth out the spike with the stage 2 map?