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HyperGear SR20det turbocharger Innovation, Evaluation and Testing

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How do these turbos compare to the atr td06sl20g with the billet wheels that hg do. Looking at the website they hg show a sr20 setup that makes 200rwkw at 4000rpm and a Mac power figure of 270rwkw.

 

Do those billet td06s spool faster than the kando td06 20g?

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Thanks for the inputs. the SL20.5 is an earlier version of a billet TD06 L2 turbine based turbocharger, it has out performed the standard 20G in both power and response based on a Rb25det.

 

The latest one is the SLSS2. under comparison it has same response as a standard TD0620G while made more power then a 25G.

 

Other thing worth mentioning is we have a different thrust setup compare to the Kando items. Which last much longer under high thrust load.

Edited by HyperGear

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do you still do the 20.5?

 

I'm chasing something that has the quick spool characteristics of the sl2 turbine or faster in an external gated t3 housing configuration for an sr20. Looking to make an easy 280-300rwkw on ethanol but don't want a lag pig.

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The 20.5 can still be made. some thing like what you need is best in a 8cm turbine. It did 280rwkws on a customer's SR20det E85 with pretty decent response.

 

billettd06.jpg

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Also this is probably worth looking at which is the SLSS1 V ATR43SS2 V T67 in both power and response. The TD based are in 10cm turbine and the ATR43 is based in a .82 turbine. All based on a Rb25det motor externally gated

 

ss2vsl2vt67power.jpg

 

ss2vsl2vt67boost.jpg

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Very interested in this development as i am looking for a nice 250Kw with good response as well. will be interesting to see how it come along. Any idea when they will be available for sale.

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Some thing like that would preferably be an ATR28SS15 or a G2. Once again it all comes down to the cams, it will be good if some one can post up an indication of percentage in gain or loses might be, on different sized cams. From there the estimation of output should be more precised. All the profiled evaluated are available, details are on our site.

 

Car's heading back to ForcedMotorWorx, its developed a loud rattling noise in the head. Hopefully just a problem with timing chain tensioner and looking to restore VCT on the same time.

Edited by HyperGear

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Add in one more results as few members requested. This is a back to back test on our SL20.5G V Ebay TD06SL20G

 

Run is on a RB25det, T3 10CM, high mounted externally gated on E85 fuel:

20gvspower.jpg

 

20gvsboost.jpg

Edited by HyperGear

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Hey Tao!

 

My SS2 external is nearly on the car haha, still being lazy 5th week on jack stands already.. only have made the dump, still need to mod the hotpipe & make a screamer pipe.

 

Anyhow, I've been messing around with my mate's S15 and he's chasing a figure of about 250kW however he wants everything to be bolt on, that means even the comp cover.

 

Are you able to machine the factory T28 compressor cover to fit the SS1.5 in the T2x rear housing? If so that would be fantastic.

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That's what I have ss1.5 in a s14/5 t28 comp housing and t2

Still yet to put it on the car and get tuned been lazy

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That's what I have ss1.5 in a s14/5 t28 comp housing and t2

Still yet to put it on the car and get tuned been lazy

 

DO IT!!!!!

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That's what I have ss1.5 in a s14/5 t28 comp housing and t2

Still yet to put it on the car and get tuned been lazy

 

what ECU do you have? I can tune it for you (provided your car isn't wildly modded)

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Just nistune

Nah not too many crazy mods just bolt ons

Poncams ras

Nismo 740cc injectors nismo reg dw300 rewired

Usual exhaust and fmic

Caltex eflex

Was just going to take it back to my usual tuner Unigroup for a touch up tune

As now I'm making 252rwkw with the atr28g2

I want atleast 270rwkw from it that's on eflex

You road tune but don't you ?

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Nah man i leave the tuning to the professionals and do just the mechanical

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That's fair enough, hopefully unigroup doesn't charge an arm and a leg to touch it up..

Essentially all they're doing is touching up the AFR when the turbo comes on song & adding 1/2 degrees more of timing up top (new turbo, less back pressure).

 

You should get a wideband and install it into your car, it's a great tool to have :)

 

My mate has a spare Nistune slot on the personal license, if you ever need a touch up on the road happy to help.

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You will be happy with your ss2 on your skyline

What fuel you using pump 98 or e85 ?

My bro just got his evo tuned with a slss2 chra in evo 9 turbo housings done by stao

Made 285.8 awkw on 25psi caltex e85

more boost would have cracked 300kw but it's still stock block

Both turbos use the same compressor but the evo slss2 is reversed and has a td06sl2 turbine

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hell yeah, it's externally gated too :)

 

I will initially tune it on 98, get the optimal ignition timing across the map then will put it through E85 (I will just be lazy and blanket on timing across the entire map, then tune the high load areas on the dyno).

 

LOL I saw that post on SAU!

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No huge risk in it If you know what you're doing. You either use super good knock detection for 98 and let that tell you when you're reaching the limit (same as dyno really). On eflex/e85 (this won't work with 98) you log a WOT pull and import it into virtual dyno, it plots a power/torque curve, you bump up the timing, do another run, see the curve increase and you repeat until the curve doesn't increase with extra timing. At that point you've reached MBT, the minimum best timing figure which will give you max torque.

 

There's obviously much more to it then that, but as a rough idea of how you road tune, that's it.

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i know about knock detection, just didn't sound like knock ears or anything was used on the road, something i don't like the sound of

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No huge risk in it If you know what you're doing. You either use super good knock detection for 98 and let that tell you when you're reaching the limit (same as dyno really). On eflex/e85 (this won't work with 98) you log a WOT pull and import it into virtual dyno, it plots a power/torque curve, you bump up the timing, do another run, see the curve increase and you repeat until the curve doesn't increase with extra timing. At that point you've reached MBT, the minimum best timing figure which will give you max torque.

 

There's obviously much more to it then that, but as a rough idea of how you road tune, that's it.

 

Spot on, however on the road I don't use aggressive timing because there's no real way to load hold and find knock.

I only tune lower powered cars on the road, once you start making over 250kW it's gets a little silly.

 

With newer ECUs such as adaptronic, you can just connect up headphones and listen for knock, however I've been told that nissan uses narrowband knock sensors, however works well enough for me :)

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No huge risk in it If you know what you're doing. You either use super good knock detection for 98 and let that tell you when you're reaching the limit (same as dyno really). On eflex/e85 (this won't work with 98) you log a WOT pull and import it into virtual dyno, it plots a power/torque curve, you bump up the timing, do another run, see the curve increase and you repeat until the curve doesn't increase with extra timing. At that point you've reached MBT, the minimum best timing figure which will give you max torque.

 

There's obviously much more to it then that, but as a rough idea of how you road tune, that's it.

 

Agreed, I also tune my car with Nistune, albeit not that well !

The risk I was talking about is doing 3rd gear pulls on public roads. You really need a driver and a nice long flat country road.

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Oh yeah, once you're making lots of power it gets silly. I get a mate To drive whilst I monitor and adjust. I haven't used the brakes to hold it at a specific load though. Just used WOT runs and logging to monitor changes

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Just finished fitting my ss1.5 to my 180sx previously had atr28g2

This turbo feels like it comes on to boost easier lighter throttle noticeable difference and on wastegate pressure 20psi seems to go as good as the atr28g2 on 25psi

Fullboost seems to come In at 3500-3700rpm very happy can't wait for tune in a few weeks

 

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Poncams aswell as the normal fmic and exhaust

Feels very similar to my old turbo setup with the hks2530 with a tomei expreme manifold but more top end power and comes on to boost instantly

Retune soon and 25psi

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Dyno didn't go the best today

On 20psi was making 250rwkw and power to limiter which was same power as before on 25psi but before power dropped off at 5600rpm now pulls to limiter

Yavuz said this turbo has more legs than the other turbo but as the boost was turned up detonation started to set in on 23psi was 263kw but slight pinging so left it at 20psi

I'm going to try the .86 rear on it in a few weeks and see how I go as he said the engine will be a lot happier with the .86rear on the higher boost pressure better

Hopefully doesn't hurt response too much but now it always starting to boost on any throttle

 

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pur40m what was the peak torque, at what rpm. When does torque drop off?

Could you post the dyno chart?

 

What size injectors are you using, on pump 98?

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