Kando Dynamics Turbo

[DVS JEZ]

In time my friend. Ur car ready to go on again?

[STATUS]

Yeh, between United and Caltex it will be pretty easy for me to run E85 now. I am still going to just use Datalogit to switch back to ULP for daily duties and making sure I dont have E85 just sitting around in the tank and lines when I am away with work etc.

So can someone start to explain the difference between Artz's RB5-20G result and DVS JEZ's? Surely VCT and tweaking a tune doesnt make 1,000rpm difference in response???? I ask because I have read that on some setups E85 can make a setup spool a little slower....have not seen any cases of it yet and wondering if its a factor in this case

VCT is worth alot and TBH we have used a lower ramp on ARTZ car to save the clutch so it actually could come on sooner.

You will also notice the housing on artz l2 falls over hard over 6300rpm too, we have done a couple lately and this size housing is not real happy with the extra 500cc and 300rwkw is about the limit we have found safely before exhaust pressures and egts get scary..

[Roy]

Interesting, a friend had HKS cams in his RB25 that deleted the VCT and its always dangerous to judge and form an opinion on the basis of one car but perhaps there was maybe a difference in throttle response and maybe 100-200rpm, hard to tell with the change in cams...but not 500-1000rpm. I would expect the 500cc, 0.5 bump in compression and VCT would at least give you at least a 500rpm improvement

[ARTZ]

but its the same size housing as the T67 10cm??

300kw is far more than I know what to do with anyway, just hoping I can pickup my lost midrange really..

If I can do that and run a solid 280 @ 16-17 psi its a damn good result IMO;Bragging rights are always cool tho.

[GTScotT]

You will also notice the housing on artz l2 falls over hard over 6300rpm too, we have done a couple lately and this size housing is not real happy with the extra 500cc and 300rwkw is about the limit we have found safely before exhaust pressures and egts get scary..

but its the same size housing as the T67 10cm??

Exactly... Thats really weird that your finding the limit of the same hot side sooner with a smaller compressor... Perhaps the 20G is pumping hotter air at 300kw than the 25G is which makes it take up more volume... Thoughts?

[Roy]

I don't think the temp of the inlet charge makes jack all difference to the temp and pressure of exhaust gases.

I suspect it is more a function of back pressure from the modified std manifold (assuming Artz is running a 10cm housing). I have made my thoughts pretty clear on the std manifold in the past. They get the job done, but at at the sort of power many are making I think you make the power easier with a better exhaust manifold, and often more power and with snappier throttle response.

[DVS JEZ]

Agreed. But most are after the stock looking setup

[ARTZ]

Yeah guys I think Trent still thinks it's an 8cm..

I did tell him it was 10cm but it was a long time ago and he has alot on his mind.

[GTScotT]

I don't think the temp of the inlet charge makes jack all difference to the temp and pressure of exhaust gases.

I suspect it is more a function of back pressure from the modified std manifold (assuming Artz is running a 10cm housing). I have made my thoughts pretty clear on the std manifold in the past. They get the job done, but at at the sort of power many are making I think you make the power easier with a better exhaust manifold, and often more power and with snappier throttle response.

Ahh yes. Forgive my ignorance there I am ill and forgetful at best right now.

POS stock manifold.

[ARTZ]

And yes apologies to all for not just going topmount as I know it would have yielded more definitive results...hindsight says I should have..just another stuff up in a list of many..:SBut I don't believe the stock manifold is an issue here as I know of a few running 350 on it..it may not be considered safe and is far from ideal, but it can be done...

[dori34]

so got a reply back from them on ebay:

It still works as there is high % of Inconel.

If there is smoke, and then you need to start take care of this issue.

Gonna push for a replacement cause im not really interested in putting a timebomb back on...

yeah try and push for a replacement, that's a pretty poor response. hope you can get it sorted.

not good to see yours showing signs of wear already where as others are still going strong.

[GTScotT]

And yes apologies to all for not just going topmount as I know it would have yielded more definitive results...hindsight says I should have..just another stuff up in a list of many..:SBut I don't believe the stock manifold is an issue here as I know of a few running 350 on it..it may not be considered safe and is far from ideal, but it can be done...

Nah im sure its fine Davo. Im sure it can be pushed to that point but it has to become a restriction at some point. It would obviously be easier done through a 35R also, rather than a TD06.

Its all a balance of parts in the end. You will probably find with any given setup you could do something as trivial as move the WG position or length of the WG tube and gain/lose very noticable amounts. That's just the nature of this hobby.

We all said it in the start, SimonR32 hit the nail on the head with his setup. If I was to do a T67 I would do my best to model his. That being said, if I was to do a 20G, I am pretty damn impressed with your results thus far and would be stoked with sub 300kw thats on from 3500.

[Roy]

Ahh yes. Forgive my ignorance there I am ill and forgetful at best right now.

POS stock manifold.

And yes apologies to all for not just going topmount as I know it would have yielded more definitive results...hindsight says I should have..just another stuff up in a list of many..:S But I don't believe the stock manifold is an issue here as I know of a few running 350 on it..it may not be considered safe and is far from ideal, but it can be done...

LOL, You guys are as defensive about the modded std manifold route as I am with people who sh1t on RB20s

Each setup and approach has its merit and advantages, and each have their disadvantages. I am not pissing in anyones pocket with this statements but in my eyes Artz result is about the most impressive in this thread. The power and response using 98 with a modified std manifold is damn impressive. It will be real interesting if with the new clutch and some more boost how the result will change.

And I am by no means a high mount for all occasions guy. I was rather disappointed in the results of my 6boost manifold not being able to match my Greddy manifold. Others may have the same or different result...but for me I was disappointed. There are reasons why I like the high mount option, but many why I don't which is why I have a HKS low mount manifold laying around in my parts bin to be used if current engine goes bang.

I am told tuners can tell when a setup is working well by how engines respond to different levels of fuel, ignition, boost etc. If back pressure and levels of ignition the engine can take are not holding you back then I doubt there is much to be concerned about. Since my general thinking is 280rwkws (some dynos are different) is about the limit of the 20G wheel on 98 then in your case the setup works well and its doubtful there is much value in doing anything to it other then some more boost vs returns.

[ARTZ]

Is there anything you don't have laying around Roy..

Nah I was concerned at Trent saying it would top out at 300kw..

I forget that of course was a pulp result..

I don't see any reason why it shouldn't smash 330 on e85..

So, my goal only being 280-300 do i use e85 and keep the boost low or just stick with trusty old pulp and 18 psi.

everything i see and hear tells me e85 is far superior all round...

[ARTZ]

Btw...have clutch now, have been quoted 350 for fitment which is fair and can get it done next week...dont have time to do it myself lately so may as well just do this.. Plus I saved heaps on the clutch so have a little left over...

Question is, do I need to gets some ks on the clutch before it goes on the dyno.?

[dori34]

install NOS, but try not to blow yourself to pieces.

[GTScotT]

Be it myself I would stay safe from shortages on 98, being able to fill up wherever I go.

But thats your call. E85 IS the superior fuel, if the car is set up for it. Theres a thread in the FI section on a guys fuel setup which detailed some important info about E85 and sitting around ETC.

[Birds]

Why not tune for both and set it up so you can switch between the tunes? That's exactly what I'll be doing once my new clutch is in.

I reckon use E85 to get a better punch out of the midrange and keep things safe up top. Maybe tune for maximum power, just to see what the turbo is capable of, then dial it back. Is there a point to going past 300rwkw in a daily driven RWD on street tyres?

[Roy]

Is there anything you don't have laying around Roy..

Nah I was concerned at Trent saying it would top out at 300kw..

I forget that of course was a pulp result..

I don't see any reason why it shouldn't smash 330 on e85..

There is a lack of good looking women in my parts, but have car shit up to my ears. By product of being single and not having a mortgage

A friend recently went the E85 route for his track only R32 GTSt (c/w dirty RB25). Perhaps his 3076 has a little more flow potential then the 20G but i suspect you could give 320-330 a nudge on E85 based on his result

I am going to give E85 a nudge as my car is very sensitive to ignition these days so talk is it would benefit more than some on E85. I suspect I wont get a back to back result with the 20G, rather the 73HTA wiht 98 vs E85 as I am praying that this lump of alloy isnt a steamer like everything else I have thrown at my car the past 24 months

[scotty nm35]

Exactly birds, the safety is the key. I bet if you tune for both you will never run the 98 again. (unless you want to drive to Sydney in it one day)

I never had any storage issues. I think people get all worried due to the storage problems methanol has, they are not the same fuel.