Accusump

[atyclb]

no, the name changed and the old RS became TWS.

There's a new RS which is not the same as the current TWS

Both the BMW approved TWS Motorsport and the new not approved Formula RS are 10W-60 oils but with different characteristics. The viscosity at 40°C and 100°C are the same since they both are SAE 10W-60. But other values as the pour point (-54°C vs -42°C), flash point (240°C vs 208°C) and total base number (8,6 vs 11,0) are very different.

[ace3]

Originally posted by MattG
What about warranty concerns? If we suffer an oil starvation problem, I'd expect that to be covered by our warranty. If we add an accusump, and then experience *any* kind of oil-related problem, our warranty may be voided. Sorry, not trying to hurt Accusump sales here, just pointing out another way of looking at this...

I'm not sure where you're going to see near 1G during normal driving, unless you're on a roadcourse. Most autox'es don't even see forces that high. So, if you *are* pulling 1G+, i wouldn't see why your warranty would cover it.

I could see where Lotus would frown on someone cracking into the oil plumbing & installing an accusump, but I suppose it's better to be safe than sorry.

[ace3]

Also, the 3qt version might be a little overkill ... plus, it would take up quite a bit of trunk room.

I've already talked to Canton about this, and was wondering if the 1qt would handle the load okay. I'm not professionally racing this car, so i'm not in a need to have a large quanitity of oil on hand.

I asked if the 1qt would work, because I think I could fit that into the engine bay somewhere. That way, I wouldn't have to take up any trunk room. Here's their reply:

AC, I THINK THE 1 QT WOULD BE GOOD BUT YOU WOULD UP YOUR TOTAL CAPACITY WITH THE 2 QT SETUP, I DO HAVE A SAND ADAPTER THAT WILL FIT SO GIVE US A CALL WHEN YOUR READY TO ORDER OR IF YOU HAVE QUESTIONS.
Thank you,
Canton Racing Products

[Stan]

Okay so there is RS and RS "2"! You could always use the Mobil 1 15W50. And the owner's manual does not suggest 10W60 at all.

[TimMullen]

Thinking about the Accusump, I seem to remember that one was available for the Exige from Lotus Motorsports. I would suspect that we could get an Accusump kit from Lotus and have it installed without voiding the warranty.

[ace3]

Motorsports Elise, actually.

[Stan]

Here is a sense of the dynamic capablities of the Elise during yesterday's autocross. The car can surpass 1 g in cornering and braking. It can briefly hit around 1.2 gs under braking and can briefly corner at about 1.15 or so during transients, a bit over one g steady state. AO48s, about 60 F, cold tires, LSS springs, LTS dampers, SSR wheels, firmed up sway bar. The graph shows a friction circle which is lateral gs left and right and longitudinal gs up and down. They often look like apples when you gather data. You can also see a partial track map and a graph comparing two runs where you can see relative speed and the "time slip" which highlights where you are gaining or losing time.

[Ruediger]

Hi Stan

In the above but also in the blue / black plot - bomber shape diagram- the Elise is relatively good in the half past 10 h region = accelerations ( lateral and increasing speed ) measured in a fast left hand corner.

The reason may be its fundamentally different mass distribution .

Or do you have a better explanation Stan ?

Ruediger

PS

Here all accelerarion values are smaller that in the blue / black plot . Was ist raining ?

[aletes]

Originally posted by ace3
Also, the 3qt version might be a little overkill ... plus, it would take up quite a bit of trunk room.

I've already talked to Canton about this, and was wondering if the 1qt would handle the load okay. I'm not professionally racing this car, so i'm not in a need to have a large quanitity of oil on hand.

I asked if the 1qt would work, because I think I could fit that into the engine bay somewhere. That way, I wouldn't have to take up any trunk room. Here's their reply:

I specified the 3 quart high pressure Accusump unit because the 2ZZ-GE supposedly has an oil pressure of 60 PSI. It may be a good idea to confirm the oil pressure at the sandwich plate adapter (while the thermostat is open).

[Stan]

>>>In the above but also in the blue / black plot - bomber shape diagram- the Elise is relatively good in the half past 10 h region = accelerations ( lateral and increasing speed ) measured in a fast left hand corner. The reason may be its fundamentally different mass distribution . Or do you have a better explanation Stan ? <<<

Well there are several things going on.

* On the half past 10 thing..this shows what you can do if you get some weight transfer onto the front tires. For about a 1/4 to 1/2 second you can get quite a bit more grip than steady state. Tires can briefly do higher cornering grip than they can maintain around a skid pad lap after lap. I tracked down those aspects of the chart. When I put the mouse pointer in those spots the program highlights where on the course the car was at the time.

* Street car versus CSP car

* Good driver versus great drivers

* Stock sized street tires, although sticky ones VS Huge Autocross Hoosiers.

* Elise accel and braking change things compared to a Miata momentum car. The Miata was later able to be floored from the hairpin all the way back to the finish - no lifting at all.


>>>Here all accelerarion values are smaller that in the blue / black plot . Was ist raining ? <<<<

Different runs, different things tried out. That run also had some of the starting line action removed if I recall correctly. Also, sometimes Miata guys use the clutch as a torque converter coming out of turns to help out a bit. No rain, good condtions all day, sunny, clear about 60 F.

[aletes]

Originally posted by aletes
I specified the 3 quart high pressure Accusump unit because the 2ZZ-GE supposedly has an oil pressure of 60 PSI. It may be a good idea to confirm the oil pressure at the sandwich plate adapter (while the thermostat is open).

I just checked with Toyota service and was told that the 2ZZ-GE oil pressure ranges from 6 PSI at startup to 60 PSI at 6200 RPM.

[sleepless]

We contacted Canton Racing about getting the exact same spec'd accusump setup as is Lotus uses. Surprisingly, Lotus has given Canton the specs so you can now have the "official Lotus setup". Canton did say that Lotus will be offering the setup themselves in the future; which is why we were surprised that Lotus gave up the specs!

Mine is on its way! Should be installed next week.

[Prolene]

The picture of the Accusump has one bracket not at the end. This is actually a no-no per instructions. Those red labels are where the clamps should be. Have to keep the cylinder from changing dimension due to the interior piston.

[Illusive]

I wouldn't use 10 weight or even worse 15 weight in the 2zz. The vvt actuators & fuction get horribly delayed in cold weather and cold start ups.

5 weight is recommended by toyota.

[Stan]

>>>I wouldn't use 10 weight or even worse 15 weight in the 2zz. The vvt actuators & fuction get horribly delayed in cold weather and cold start ups.<<<

I've notice some Lotus dealers use 10W40 oil for the oil changes they perform.

[Jack]

Originally Posted by sleepless

We contacted Canton Racing about getting the exact same spec'd accusump setup as is Lotus uses. Surprisingly, Lotus has given Canton the specs so you can now have the "official Lotus setup". Canton did say that Lotus will be offering the setup themselves in the future; which is why we were surprised that Lotus gave up the specs!

Mine is on its way! Should be installed next week.

Pete: Can you please give me the name of the contact person at Canton who's up to speed on this? Thanks in advance.

[Illusive]

Originally Posted by Stan

>>>I wouldn't use 10 weight or even worse 15 weight in the 2zz. The vvt actuators & fuction get horribly delayed in cold weather and cold start ups.<<<

I've notice some Lotus dealers use 10W40 oil for the oil changes they perform.

I've noticed several incompetent toyota dealers do the same on various celicas.

[sleepless]

Originally Posted by Jack

Pete: Can you please give me the name of the contact person at Canton who's up to speed on this? Thanks in advance.

Contact Colin at www.speedwaremotorsports.com.

[doma]

sleepless>Contact Colin at www.speedwaremotorsports.com.

Have you all seen their 'project car' web page? It's an Elise - and they removed 180 lbs from it. Sleepless, is that your car?? :-)

http://www.speedwaremotorsports.com/project/#

[NMRJock]

Originally Posted by doma

sleepless>Contact Colin at www.speedwaremotorsports.com.

Have you all seen their 'project car' web page? It's an Elise - and they removed 180 lbs from it. Sleepless, is that your car?? :-)

http://www.speedwaremotorsports.com/project/#

The location of the fire suppression pull on that Focus is very cool, but where do you put your big gulp? It gets hot sitting on the grid without anything to drink...