Jump to content
SAU Community

Uncle Duncan Wins A Race!

SATO GTS
 Share

Recommended Posts

Risking Grand Master

Risking

Posted
Posted

acumulators are not aloud in the combinded touring series but we are negotiating with the rule enforcers at the moment about possible oiling system improvements that need to be addressed.

At the end of the day if we can improve the system and it means Duncan is at every round then they should be all for it. More cars racing in their category the better.

The current rules are a bit of a joke when these are meant to be "race cars".

Our engine sealer has told me two other holdens from last weekend have also now been diagnosed with engine issues after the hour enduro. One finished one didn't. His going to be a busy boy sealing up fresh engines for next round!

  • Replies 161
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Posted Images

N1GTR Grand Master

N1GTR

Posted
Posted

Without 4wd you dont generate enough G's to move the oil in the sump :wub:

Hahahahaha :P

Seriously though good point, you've also got a high flowing oil pump. How big is the sump?

Duncan are you at least allowed to have a head return to sump?

Duncan Grand Master

Duncan

Posted
Posted

no the rules are pretty simple. all motor standard except sump is free. Brad is working on some piece of art new sump to make the most of that. No oil returns. No enlarged oil galleries etc etc its all standard spec

hey there might be challenges keeping rbs together.....but the car still goes fine when it's running. I figure the best bet is a spare motor so I just picked up one today (thanks for posting it down Russ :))

One thing to remember though comparing this car to most.....it runs a minimum of 20min straight at full throttle 95% of the time, 5000 to 8000rpm. Or in the case of the enduro same for an hour. This puts a real strain on water temps, oil temps, oil itself. Not to mention at least 3 full standing starts per round to smash everything around as well.

Its much harder on the motor than 3 lap sprints or even 20 min track sessions - I don't have the option for a mid race cool down lap if things start heating up so this has to be OK to go 100% for all its time.

Risking Grand Master

Risking

Posted
Posted
One thing to remember though comparing this car to most.....it runs a minimum of 20min straight at full throttle 95% of the time, 5000 to 8000rpm. Or in the case of the enduro same for an hour. This puts a real strain on water temps, oil temps, oil itself. Not to mention at least 3 full standing starts per round to smash everything around as well.

Its much harder on the motor than 3 lap sprints or even 20 min track sessions - I don't have the option for a mid race cool down lap if things start heating up so this has to be OK to go 100% for all its time.

Thats something alot of people dont seem to realise. Considering its a stockish engine it makes it even harder to keep everything under control.

We'll build something thats just fits the guidlines and make sure every prevention we possible can use is used.

The new sump is pretty awesome with a swinging pick up and multi level baffles.

You know now we have a spare engine coming your never going to need it!

N1GTR Grand Master

N1GTR

Posted
Posted
no the rules are pretty simple. all motor standard except sump is free. Brad is working on some piece of art new sump to make the most of that. No oil returns. No enlarged oil galleries etc etc its all standard spec

hey there might be challenges keeping rbs together.....but the car still goes fine when it's running. I figure the best bet is a spare motor so I just picked up one today (thanks for posting it down Russ >_<)

One thing to remember though comparing this car to most.....it runs a minimum of 20min straight at full throttle 95% of the time, 5000 to 8000rpm. Or in the case of the enduro same for an hour. This puts a real strain on water temps, oil temps, oil itself. Not to mention at least 3 full standing starts per round to smash everything around as well.

Its much harder on the motor than 3 lap sprints or even 20 min track sessions - I don't have the option for a mid race cool down lap if things start heating up so this has to be OK to go 100% for all its time.

Reimax gears in N1 case?

Same sump i have with some more baffles (is brad can manage to fit anymore in there)?

Risking Grand Master

Risking

Posted
Posted
Reimax gears in N1 case?

Same sump i have with some more baffles (is brad can manage to fit anymore in there)?

No not using Reimax gears. Found something we consider better.

Totally different sump design to yours Steve. This one has a pick up that is free to move around the bottom of the sump with the oil. Its got a revised baffle set-up as well which is simlar to yours,

BOZ22N Grand Master

BOZ22N

Posted
Posted

Has anyone trying machining a spline on the crank and getting a billet gear made with a internal spline? That would be much stronger than the square drive at the moment and with no sudden change in direction like the inside of the gear now there will be only very minimal stress raisers.

We get tricky stuff like that made up regularly at work might be worth a try if anyone wants to donate a damaged crank to trial on????

Duncan Grand Master

Duncan

Posted
Posted

well thats the million $$$ question really Ryan.

Once you start pulling apart borken motors it's all guesswork. sure some guesses are more educated than others and there is some evidence to look at but there is a lot of assumptions as well. especially on the internet.....

Duncan Grand Master

Duncan

Posted
Posted

I'm using anything. motul 4100, elf whatever in this motor since it was run in, and penzoil 20/50 to run it in. Lots of theories about which oil to run too. Either way I change it every weekend.

BOZ22N Grand Master

BOZ22N

Posted
Posted
well thats the million $$$ question really Ryan.

Once you start pulling apart borken motors it's all guesswork. sure some guesses are more educated than others and there is some evidence to look at but there is a lot of assumptions as well. especially on the internet.....

Well i look at it this way, oil pumps have been failing so until engines stop popping or they pop with intact pumps why not make them bigger and stronger then see if it breaks? Then get into cavitation, vibrations and oil flow issues then? I am no genius but wouldn’t you just try and stop the bits that are breaking breaking. hhhhmmm.

Are the drive gears the main part that have been failing?

Or maybe the crank is heating up and expanding at a different rate to the gear so the clearance is too tight at temp between the gear and the crank so the crank splits the gear??

Too much night shift must sleep. zzzzzzzzzzzzz

PRO_32 Proficient

PRO_32

Posted
Posted
As you increase the strength of one part, you make another part the new "weakest link"

to try and stay within a reasonable budget, you can't keep chasing the weakest link untill they are all above your power/requirments, sometimes....

isnt that mptorsport in a nutshell?

"how fast can you afford to go"?

I understand what your getting at though, the law of diminishing returns does apply, guess it's all relative to your budget though.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • The Bogan
      MLR's Bogan cruise ship

      By The Bogan · Posted

      Nah, the car seems to run exactly as it did prior, in saying this it does "seem" to be better down low, like more eager to rev, but that may be 100% placebo effect from intake noise But, I'm not worried about it at all, in the end it is a fairly low compression NA engine that has a well shrouded intake,  if it is getting hotter IAT I cannot notice anything negative performance wise from the seat of my pants thrashing it about on the street or sitting in traffic, so meh, car now now makes induction noise so I'm happy
    • Kinkstaah
      MLR's Bogan cruise ship

      By Kinkstaah · Posted

      Do you have an IAT sensor? It's worth checking it to see. You may be suprised how little gap you actually need to flood your engine with hot air. (I tape up my airbox for a reason) :p
    • The Bogan
      MLR's Bogan cruise ship

      By The Bogan · Posted

      @KinkstaahKrinkle paint the "silver" alloy, not the red filter frame Engine bay heat won't be a issue worth worrying about as the silver alloy blocks it off on 3 sides, as for the top, the bonnet seals most of it and the big OEM CAI intake snorkel is still fitted in its original position  I will head into Clark's Rubber when I have some time to grab some pinch weld to tidy up the alloy after I paint it As for performance, I honestly wasn't expecting any, the only reason I got it is because the intake noise sounds cool to my old ears when I'm feeding it the beans Sometimes it's the silly things you do in in life that gives the most fun, and I do love anything that makes cool car noises In other news: I survived 4 nights at sea with Jackie not throwing me over board, holidays are continuing now as we are currently chilling at the Beachcomber in Toukley, after taking the coast roads from Sydney in the MX5, top down all the way, Toukley is where I spent a good deal of my youth holidaying during the summer months, there's lots of reminiscing going on,  and lots of beaches and old houses to visit Next on the list is to head to Batemans Bay for a few days, but we will take the Commodore out to stretch its legs, then Commodore hasn't really moved for months
    • r32-25t
      PRP RB26 cast block + head prototype running

      By r32-25t · Posted

      There’s probably people who’d like to do it and then when it comes to putting their hands in their pockets they’ll all disappear into the shadows 
    • Duncan
      Thinking of getting a Q50 300hp and just tuning it instead of getting the Q50 Red or 400R

      By Duncan · Posted

      interesting....sounds like the later trans has software differences (or AM vs JDM). If I wasn't going down the tuning route it would be worth looking into retrofitting a new computer to the old box.
×
×
  • Create New...