What Dies In Gtrs?

[nugget400hp]

Hey guys, i have an 89 r32 gtr with a fresh rebuild...

what is the main cause of destruction of these engines as i dont want to rebuild it again any time soon.

thanks

brad

[Gav]

My order of likely destructive events would be:

lack of oil to big end bearings due to pick-up sucking air on the track

detonation damaging pistons due to poor or over aggressive tuning

disintegration of ceramic compressor wheels due to overboosting stock terbs

impact damage when inexperienced or over confident driver fu(ks-up

Fairly obvious stuff when you think about it.

Good luck and enjoy your 'R (appropriately and in moderation)

Hey guys, i have an 89 r32 gtr with a fresh rebuild...

what is the main cause of destruction of these engines as i dont want to rebuild it again any time soon.

thanks

brad

<{POST_SNAPBACK}>

[nugget400hp]

thanks, should i upgrade my oil pump to be safe?

[Gav]

Not so much oil pump but crank collar (on R32) or R33 crank to ensure positive engaugement to oil pump is also a must IMHO

thanks, should i upgrade my oil pump to be safe?

<{POST_SNAPBACK}>

[carl h]

proengines on here makes a nice crank collar for the early rb motors at a very reasonable price, also wouldnt hurt to throw on a r33 n1 pump or an r33 pump.

[Duncan]

I reckon dying fuel pump or injectors are the biggest reason for killing engines.

But there is a thread about this with a heap of people reporting the reasons, tune etc etc

[R31Nismoid]

Not so much oil pump but crank collar (on R32) or R33 crank to ensure positive engaugement to oil pump is also a must IMHO

That should have been done as part of the rebuild

If it wasnt then i'd question the persons knowledge of an RB motor.

[nugget400hp]

whats a crank collar? do i have to rip the engine apart?

[Duncan]

yes you sure do. It sits on teh end of the crank where it engages the oil pump. The early 32s used about 3mm on the crank, the 33s and later used about 1cm. I fyou look at the wear on a 32 oil pump you will see it was not enough

[nugget400hp]

thanks... what rpm can i safely rev this thing to, cause i look at the tacho and before i know it, im close to 8000!

sorry for all the questionns, im new to the 26

[Wazz]

if i could find my digi cam i could post a pic of the r32 oil pump with wear.. and it shows why a crank collar should be installed but yes.. it is bout 3-4mm literaly f**k all when you look at how much extra there is there not being used..

[carl h]

for a good photo compareson take a look here:

http://www.racebread.com/Documents/Good%20...k-gawdzilla.doc

oh you will need word or some other office capable software to see it tho...... but its a direct compareson for those who are still puzzled

Edited February 22, 2006 by carl h

[ish]

thought i would add a few little questions as i am in much the same situation as nugget400hp ...

Interesting about the collars! I never really knew that they were a neccecary upgrade but it makes very good sense now after reading the carl h Doc's!

thanks guys

the ceramic turbs dont sit right with me as they sound very different until warmed up to optimum temp, or well mine DO! and will be upgraded as soon as i decide on combo.... so for now its mellow crusing ...

one theory was burnt oil on turbo bearings ? Could someone please explain and why they sound so chirpy until used and temp is present in oil temp gauge or has anybody got the same noise's

its got me stuffed because the engine is a fresh build but now after study i think the turbos may not be.

basicly i dont want to pop them while there on the fresh engine.

the cars been adjusted to about 12psi but is rarley taken there and hi rev's kept to a minimum , maybe 8000 once a week for a play...

What will happen before these things die symtoms wise?.. (the ceramic turbos)

as in a good serviced lifetime?

As in bad serviced lifetime

14 Psi boost used often ?

boost used when they are first engaged and sound chirpy like i explained before, as this can take 20 minutes sometimes ideling and still needs driving time to get oil temps around where the noise changes .

And the big question what happens if one goes as in follow on engine damage ?

[Beer Baron]

never heard them make a noise like you describe. doesnt sound right to me.

BTW Gav is spot on with his reasons for RB26 failure, duncans one is pretty comon too, though i think dunc has experienced first hand the ones of Gavs list too!

[blk180]

I reckon dying fuel pump or injectors are the biggest reason for killing engines.

But there is a thread about this with a heap of people reporting the reasons, tune etc etc

I think this just killed my 12k rebuild

[elboro]

never heard them make a noise like you describe. doesnt sound right to me.

BTW Gav is spot on with his reasons for RB26 failure, duncans one is pretty comon too, though i think dunc has experienced first hand the ones of Gavs list too!

Yeh my old GTS had a t4/t3 turbo and it made a different noise when it was cold compared to when it was warmed up.

And btw look out for stcok gtr clutches, they go pretty easy.

ElBoRo

[ish]

yes ... its odd, none of my other turbos have ever done it and i cant help thinking maybe something isnt flowing right until it is hot and thin causing bigger tolerence gaps in the bearings while cold ....

i will be relieved when there changed .....

[nsta]

im very keen on an r32 in the near future.......and was about to ask the same question, so how much would it cost to fix the oil and crank issue(without having to do a rebuild???)