Robs Sil80-more skyline than S chassis

[robbo_rb180]

Raced the car over the weekend, put the advan a050 on & got a wheel alignment friday.
Did some logging on the way out to the track and was having weired issues with it hitting a MAP Limit randomly under load.
Round 1 kept hitting a limiter at different loads and then lost all positve manifold pressure. Checked all the intercooler pipes and nothing wrong so pulled all the pipes and checked to see if BOV was stuck open but it was fine. Ended up pulling the external gate, stripping & inspecting it. Found nothing wrong so assembled it all started up and went for a quick drive and had boost again. To be safe I zeroed the wastegate table above 3500rpm and did the next session and no issues so random.
Car was perfect after that and ended up going 47.45 Finished 1st in class and tied 4th outright was beaten by rcr skeleton, BMW M3 race car, 400kw WRX and 600hp LS ae86.
The adavns are still the best tyre I have used and won't be going back to the nankang. Throttle blip was good for 2 corners and added another 5%. Need to do an oil change & bolt check will be sorted for another event. Should also look at a new clutch as was slipping towards the end of the day.
Really want to put the fixed back seat in so I'm not sliding around......

[No Crust Racing]

What are the Advans worth? what size you running? 

I am still planning on moving to used slicks like the others in my club. 

[robbo_rb180]

1 hour ago, ActionDan said:

What are the Advans worth? what size you running? 

I am still planning on moving to used slicks like the others in my club. 

$2400 255/40/17

Every event I generally go to slicks would put me in open/formula classes. Would like to have a go one day with some. What slick are you going to go? 

[No Crust Racing]

Ouch, 2-3 times the cost of AR1s? 

In my club my car will already be the top class after the engine swap so i might as well run the same slicks they do (porsche cup i think?)

I will toss up what Semi's I use for other events. The Hankooks look OK. 

Keen to see how much life you get out of those Advans. What compound? 

[Dose Pipe Sutututu]

On 13/06/2021 at 8:00 PM, robbo_rb180 said:

MAP Limit randomly under load

look at your battery voltage in the logs, possibly some irregularities there?

[robbo_rb180]

3 hours ago, ActionDan said:

Ouch, 2-3 times the cost of AR1s? 

Keen to see how much life you get out of those Advans. What compound? 

So far done v8 sprint last year (5x 20min), around 1000km Street driving and this sprint day. Most people I know who run them get at least a year of sprint racing and consistent to the end. 

Medium compound 

@Dose Pipe Sutututu will do. Got to get a new alternator as drops voltage in hot weather and when all the fans and lights are on. 

[No Crust Racing]

Probs on par with Nankang then. 

I understand they have more grip though, but damn that price. 

Can't say the AR1 are what I'd call consistent, even within a sessions vs heat. 



 

[robbo_rb180]

Took the sil80 out to the local hill climb for a run sunday. Car decided it didn't want to make boost so just ran it like that and still managed a 1.04:52 and 6th outright. Had a chat with some people about about the issue and seems the wastegate is getting stuck open so pulled it apart and found a few areas were marked on the valve shaft so cleaned it and linished the the shaft put it back on and everything seems fine now.
Booked King of QR in September and will start getting it ready for e85 and retune in the next few weeks.

[robbo_rb180]

So after cleaning up the wastegate went back to the dyno with a tank of ethanol and did a bit of constant load tuning and got the fuel table good, went to do a power run and only made 4psi of manifold pressure. checked hose and did another pull to 4000rpm to see if happened again. Cracked the shits loaded it up and straight back in the shed. Gave it a day and investigated a bit more....................

Found the issue causing no boost........ Catalytic converter had collapsed after I had pulled the turbo off 

So cat is now high flowed.

Decided to put rego back on it as got over towing it 7km to the dyno so now have a tank full of e85 and dyno booked for the morning. Been driving it daily for 2 days with no issues so far so will see how much the setup will make then do a few runs at lower boost levels to have a variety of Wastegate DC tables I can use.

[No Crust Racing]

Do you think Vicroads will let me re-reg my car after it has a full cage????

I've rarely heard of a cat actually collapsing and never personally seen one. 

What causes it? Heat? Age? Abuse? 

[robbo_rb180]

Probably not but should enquire about rally rego, that's what we have here. 

Too much heat, vibration probably never looked at the why. 

 

So it survived the dyno with someone who has a lot of experience and knowledge. That's all just on gate spring and solenoid just keeping it closed until 3500. 

Any more boost and would blow spark out. Going to leave it for now and look at upgrading coil packs, alternator and clutch in the future.

[robbo_rb180]

After the dyno pulled the plugs and swapped back to usual NGK and no more spark issues car went awesome.

Did Targa Great Barrier Reef as navigator again in the commodore and took out Classic GT Class. Car is so much faster now with new engine and gearbox setup.


Done a few events in the past few weeks, ended up driving to the sil80 all the way to Brisbane and back all on e85 around 3000km. Did a test day at Lakeside DTC with Skid Control car was solid all day with no issues then did King of QR had a few issues with manifold to turbo nuts coming off & loose and pumping the catch can with oil. Fixed it all and did all but one layout, besides those problems car was super quick and all on the nexen sur4g (200 treadwear) which was pretty good for a budget tyre. Lost the starter motor for the last session and had to be pushed to started to get out on track and back to the brother in laws 😅

Got back home and did a lot of maintenance with all fluids and filters changed. When draining the gearbox oil had a lot of material and a synchro clip come out so box will be out soon.
Did the local hill climb and smashed my PB with a 59:43 which got me 4th outright and fastest rwd, got beaten by all the EVO's and a WRX.
Been daily driving it and still pretty cool to cruise around in and am finding it more comfortable than the 370. 
Got the last sprint for the year next week, wanting to hopefully better my PB and maybe take the class win for the year.

  

 

[No Crust Racing]

Hot damn son what an update, Out there killing it

Box plans? 

 

[robbo_rb180]

On 10/1/2021 at 8:11 AM, ActionDan said:

Hot damn son what an update, Out there killing it

Box plans? 

 

Going to rebuild it with fresh bearings, synchros and 3/4 selector upgrade. Hopefully gears are still good. 

[No Crust Racing]

Nice, Interested to see how that is done. 

[robbo_rb180]

Don't think a hoist will fit in here 😅

All moved down to Ipswich now. Got first hot hatch cup round at lakeside Saturday. Had a few problems with the getz running and it's stuck in Rockhampton at the moment so will be using a mates car.

Also got 2nd place in class for last season sprints in Townsville and only doing 4 of 7 rounds which is cool.

 

Edited March 17, 2022 by robbo_rb180

[No Crust Racing]

Maybe a quick jack or a 1.2m scissor hoist etc. Can be moved around too.

 

 

[robbo_rb180]

On 3/17/2022 at 11:50 AM, ActionDan said:

Maybe a quick jack or a 1.2m scissor hoist etc. Can be moved around too.

 

 

Nah it's coming down.

7x9x4 3 bay is going in, just waiting on detailed quote. Going to put in a clear floor hoist 😁

How's your build going, been much more progress than what you put instagram?

[No Crust Racing]

Nope been too busy MTB'ing and getting our recently acquired Farm Ute up to scratch for testing to see if i's useful to us. 

Oh and Fencing. 

 

[robbo_rb180]

Had the sil80 out a few weeks ago for some 1/8th mile drags at Lakeside. Car is hard to launch and just spins but once gets traction in 3rd is a jet.

Clutch was not engaging properly after 2-3 back to back runs and gearbox wasn't very smooth either. Been filming heaps lately and putting on YouTube. 

 

Shed deposit is paid and should start early July