Durability Of Your Built 26 Over Or Around 370awkw

[Duncan1]

What i am curious to know is how your experience has been in your built 26.

Do you have confidence that it wont blow up on the track, how many klms have you done since the rebuild, how long has it been since your rebuild, did you blow it up again since!?!?

Obviously a build is only as good as the weakest link, be it tuning or the way it was all screwed together. My question may sound like the old "how long is a piece of string" but the reason im asking

is we will be doing about 10-12 track days a year in a VERY well built/tuned 93 r32 GTR V spec that puts out 370awkw [track] on low boost and 420awkw on high boost. The car has ALL the good bits, done by a very reputable shop.

What i would like to hear is that people say "yeah mate had the rebuild done 4 years ago, done 25 track days, puts out 350-380 awkw on the track and is running as well as the day i did the rebuild.!!!

Is this a pipe dream?!?! or is it acheivable with the right builder/tuner/driver!?!? I see so many blow up @qr. Is this just a fact of life that each year it will need a pull down?

Im interested in your feedback and experiences.

Edited September 26, 2009 by Duncan1

[jeffworld2]

10-12 track days a week huh? thats a very long week :S

if you build it to take it you will still wear it out. thats racing

[Duncan1]

10-12 track days a week huh? thats a very long week :S

if you build it to take it you will still wear it out. thats racing

haha. at least you were paying attention [week edited to year!!], appreciate your comment.

do you have a built 26 that you track? how has it gone?

Im looking for people with actual experiences.

Edited September 26, 2009 by Duncan1

[Grunter]

I don't own one myself but do have experience other friends highly tuned track GTR's at the track. Will need a very big wallet and I would higly recommend a dry sump and you would be looking at a engine freshen up at least every year or year and a half to keep it sweet. They need a lot of attention and money spent on them to keep them reliable. Just my 2 cent

[DRIFTER]

my car only gets driven at drift events and makes just over 300 rwkw. my first build lasted 18 months before a aggressive tune blew a head gasket and pitted the pistons. that was about 18 months ago and the new egine is still running great and i run it on e85 so it should't ping again. i'm a bit like you though, can't decide if i should pull it down and check it out or wait till it wears out?

[Duncan1]

my car only gets driven at drift events and makes just over 300 rwkw. my first build lasted 18 months before a aggressive tune blew a head gasket and pitted the pistons. that was about 18 months ago and the new egine is still running great and i run it on e85 so it should't ping again. i'm a bit like you though, can't decide if i should pull it down and check it out or wait till it wears out?

You wouldnt of been too impressed with the Tuner. I imagine you have since changed!?!?

I hear of tuning companies modified cars that do see track work lasting 4 years, i just wonder if they really do or they just say that to make build cred.

would it be fair to say that drifting is probably even harder on a motor than circuit sprints!?!

Hopefully your current one holds up.

[Duncan]

I don't know anyone that's racing them and doesn't have to rebuild regularly. maybe some people don't up to it.

having said that, I reckon with good monitoring like one of mountainrunner's engine monitors, and sticking to light use light supersprints where you only knock off a few laps at a time, I think it will last a while.

[Duncan1]

I don't know anyone that's racing them and doesn't have to rebuild regularly. maybe some people don't up to it.

having said that, I reckon with good monitoring like one of mountainrunner's engine monitors, and sticking to light use light supersprints where you only knock off a few laps at a time, I think it will last a while.

Yeah well its only ever about 30 laps in the day and 5 hot laps per session, so its not sustained high temps. I am a bit spoiled by the Evo, in that it could do an almost infinate amount of laps and still be good as new, admittedly with much less power. Having said that i know lots of people with very high hp Evo's that have incredible reliability. Why cant people seem to get this from even big dollar 26's? Hopefully we can.

[Duncan]

well my experience is, apart from cooling, they are fine stock. by old 33 did a track day a month for 3 years, 8x 20 min sessions a day....by the end of that it needed new rings (fair enough after all the high reving) but that was all.

not sure why spending more magically makes them better.....at 400kw you are making twice what the factory engineered in for. put some steel wheel standard turbos on it, turn the boost down to 12, make about 200kw it will last much longer

bTW 5 lap sprints? I reckon they are very easy on the car compared to 20 min sessions so you may well be ok. 1 warm up, 1 cool down, no more than 6 min flat out so they won't get hot in that time. intercooler, oil, water, gearbox, fuel all will be much better than if you have to run for long periods flat out.

[Duncan1]

well my experience is, apart from cooling, they are fine stock. by old 33 did a track day a month for 3 years, 8x 20 min sessions a day....by the end of that it needed new rings (fair enough after all the high reving) but that was all.

not sure why spending more magically makes them better.....at 400kw you are making twice what the factory engineered in for. put some steel wheel standard turbos on it, turn the boost down to 12, make about 200kw it will last much longer

bTW 5 lap sprints? I reckon they are very easy on the car compared to 20 min sessions so you may well be ok. 1 warm up, 1 cool down, no more than 6 min flat out so they won't get hot in that time. intercooler, oil, water, gearbox, fuel all will be much better than if you have to run for long periods flat out.

That is a terrific life out of the 33. Well put the money aside for a second, getting very professional people to build, tune, and use the very best of parts in my eyes should make things perform better and more reliably. Am i wrong!?!? It seems though that it all comes at a hefty initial price, not magic!

yeah the sprints are only 7 laps, 1 warm up, 5 hot, 1 cool down, so i was hoping that might be its saving grace!

I hear you loud and clear about lower output and longevity but i may as well drive the Evo if that is the case. Gtr is a pretty ordinary tool at 200 awkw.

I think that their are people out there that have built 26's that see alot of track, put out similar outputs whilst still lasting 3 or so years, i just want to know who they are, who built their car and who tuned them.

Nice user name by the way!!

Edited September 27, 2009 by Duncan1

[R31Nismoid]

5 hot laps per session - mate it should last you a few solid years of service.

Sessions here in Vic are 20mins, so your looking at similar 5-8 solid laps with 4-6 sessions/day. Fair few cars have been doing it without much issue.

Some have not as well, so it seems to be not a 100% type of thing.

The rally guys who do 20min stages seem to generally have less power overall to make the entire car last longer (tyres, brakes etc, 330rwkw).

I know of a few that have not been torn apart for a number of years, still going strong.

If you can't get 4 years out of a 370rwkw setup with that type of track day, something went wrong with the build.

The key more than anything is a good/safe tune, regular oil changes and similar so nothing is degrading too fast. Even adding in a bit of race fuel to a tank etc etc to do everything you can to make sure it's nice and safe.

How often you should be changing oils etc, arguable as everyone seems to have slightly different ideas on that one based on what they can afford to do.

Couple people i know of change it after every sprint day

[MrStabby]

How often you should be changing oils etc, arguable as everyone seems to have slightly different ideas on that one based on what they can afford to do.

Couple people i know of change it after every sprint day

I'm always surprised that people have different ideas about oil change intervals, when a simple oil analysis should give you all the answers you need AND give you useful feedback on how long your motor is likely to last.

If these guys havent verified the need to change the oil by having it analysed they're probably throwing money away. Analysis is a lot cheaper than sump full of 300V....not to mention a motor rebuild.

[Duncan1]

5 hot laps per session - mate it should last you a few solid years of service.

Sessions here in Vic are 20mins, so your looking at similar 5-8 solid laps with 4-6 sessions/day. Fair few cars have been doing it without much issue.

Some have not as well, so it seems to be not a 100% type of thing.

The rally guys who do 20min stages seem to generally have less power overall to make the entire car last longer (tyres, brakes etc, 330rwkw).

I know of a few that have not been torn apart for a number of years, still going strong.

If you can't get 4 years out of a 370rwkw setup with that type of track day, something went wrong with the build.

The key more than anything is a good/safe tune, regular oil changes and similar so nothing is degrading too fast. Even adding in a bit of race fuel to a tank etc etc to do everything you can to make sure it's nice and safe.

How often you should be changing oils etc, arguable as everyone seems to have slightly different ideas on that one based on what they can afford to do.

Couple people i know of change it after every sprint day

Well that sounds a bit more positive, The car will have race fuel mixed in on each occasion. $190 for 20l! I couldnt believe it! Oils/oil filter are HKS. I Agree that it should last that long. 4 years on a seldom driven car isnt that long and doesnt equate to many klms.

[Strik3r]

My engine was built nearly 18 months ago by Dan @ ERD. Is making 620hp (465kw) at the wheels, has seen 6 track days and a drag day so far (with 2 more track days and a drag day left in this year) and has a total of just under 10000 kms on it. We get the oil tested between track days and thus for all results have been excellent. Good builder, good components + good tune == happy engine.

[Duncan1]

My engine was built nearly 18 months ago by Dan @ ERD. Is making 620hp (465kw) at the wheels, has seen 6 track days and a drag day so far (with 2 more track days and a drag day left in this year) and has a total of just under 10000 kms on it. We get the oil tested between track days and thus for all results have been excellent. Good builder, good components + good tune == happy engine.

Hey mate,

thats great to hear, That is some massive power you have there, how much are you putting out on the track!?! I have actually seen your car @qr a few times. I imagine your heading up on the 6th. If so see you there.

[Strik3r]

Hey mate,

thats great to hear, That is some massive power you have there, how much are you putting out on the track!?! I have actually seen your car @qr a few times. I imagine your heading up on the 6th. If so see you there.

i dont adjust the boost for trackwork, so still putting out the full 620, though was down on power at the last track day due to an exhaust leak. I should be there on the 6th so come say hi! I'm using it as a bit of a tune & test day so might not be doing a heap of laps, but yea, would be good to meet you.

[Duncan1]

i dont adjust the boost for trackwork, so still putting out the full 620, though was down on power at the last track day due to an exhaust leak. I should be there on the 6th so come say hi! I'm using it as a bit of a tune & test day so might not be doing a heap of laps, but yea, would be good to meet you.

Yeah i will definately come over and say, we could well be paired in the same group, are you running single or twins?

Very impressive that it runs full boost on the track with reliability. Terrific car, sounds amazing too...

Edited September 28, 2009 by Duncan1

[Strik3r]

big single t04z :>

[Duncan1]

big single t04z :>

That makes 2 of us! The 6th will be the first time i have driven this car on the track, i cant help but thinking i will have to be in a gear lower than the evo around turn 6 and the tighter stuff. say 2nd gear instead of 3rd.

Are you finding your short shifting 2-3 on the exit of 6? and does it drop much off boost doing so?

[timsr33]

my car had 401kws and had seen 7 track days 2 hill climbs and super sprints and 3 full days on the dyno

plus 20000 kms of crusing and burnouts and i was always giving it a flogging on cruises and the only problem i had was a blown head gasket and when i pulled the motor down it was still like new i reakon if you keep the fluids good have the right fuel setup and dont get oil starvation and have a safe tune you should be right for at least a couple of years