Hypergear Turbochargers and High flow Services Development thread

[89CAL]

I Like your latest update on facebook/youtube Stao

I'm sure they will be a more in depth update on here soon, look forward to it

[hypergear]

I bought a wheel and tire package 3 years ago and I have no idea what those rims are apart from they fits. lol

Any way. quick update. This is our latest VNT turbine system using a ball bearing SS2 core. I don't have a high speed camera so this footage was taken with a air blower meter away from the turbine housing with VNT nozzles engaged and disengaged at low shaft speed. Notice the change in shaft speed with VNT nozzles engaged.

Will be testing it next week when Trent has time, and hopefully I will get stock response with 370rwkws.

[ARTZ]

Wheels will be +38 most likely...

[hypergear]

This is a dyno reading sent from a customer in Sweden using a older model ATR43G3 in .82 type A rear. made 477rwhp on pump 98 fuel.

Its got ebay manifold that holds the turbocharger in stock position, internally gated with all the bolton bits.

Can't understand their language, details are at:

http://www.garaget.org/?car=257470

[iruvyouskyrine]

477 Fwd HP

Now that would be a handful.

[t_revz]

That's a smidge over 40psi...

No wonder boost looked like it was slow to build at first

[Hanaldo]

How...

[hypergear]

I don't think any part of this package would survive on 40psi, been told its running 20psi.

[Birds]

Haha he's not drifting the thing, don't need a diff that tightens under deceleration 1 way diff would be the go.

1.5 way

[Birds]

Very excited about this VNT stuff!

[t_revz]

I don't think any part of this package would survive on 40psi, been told its running 20psi.

Well that sheet shows about 280kpa or 40 psi. I guess that's why peak torque is a little late at 6k? Seems to be at 20psi just before 4k which is normal. Interesting

[Lithium]

It's saying absolute pressure, it's running about 175kpa gauge pressure so 26-27psi

[t_revz]

Ah my bad. That's more realistic

[hypergear]

It's saying absolute pressure, it's running about 175kpa gauge pressure so 26-27psi

Thats my tire pressure.

We were in Heathcote again today. The car's having some issues, I might have installed the new fuel pump too high as it had fuel surging issues, gear stick snapped out, and since the new tyres gripped lot hard the diff seems to let loose. Its occasionally doing one wheel launch. Not sure which diff to get yet.

Over all we did end up with 4 good runs and the best one was 12.26 with 124.76 M/H

The tire shop pumped my tires to 40psi. We first dropped it to 26psi, then further down to 16psi which it grip the most.

It started to rain in the afternoon, so the day ended early. will post some videos later on.

[Joshbigt62r]

Get what diff centre Trent recommends. I thought the standard diff would have trouble with them big sticky mickeys haha.

[hypergear]

Felt that on the way back. the car skits heavily to one side. He did mention about welding them together. or not sure if there is any one whom can modify stock diff to make them stronger.

Alternatively I was thinking buying a kaaz diff. not sure which one is better to get 1.5 or 2 way? It is a road car and I do drive a fare distance testing new turbos, I still want it to handle smoothly on road.

[LANDSCRIBBLE]

The cheapest way to get extra lock without welding is to pull the diff apart and replace the worn out shims with slightly thicker ones, which can be bought from Nissan. It can feel like a welded diff afterwards for some time though which is a huge PITA when you're driving around normally, but now you get powah to both wheels

[Joshbigt62r]

I'd probably try re-shimming it first then if your not happy get a kaaz or nismo 1.5/2way. 1.5 will be alot nicer on the street.

[ARTZ]

Felt that on the way back. the car skits heavily to one side. He did mention about welding them together. or not sure if there is any one whom can modify stock diff to make them stronger.

Alternatively I was thinking buying a kaaz diff. not sure which one is better to get 1.5 or 2 way? It is a road car and I do drive a fare distance testing new turbos, I still want it to handle smoothly on road.

welded diff will handle fine as long as you keep driving straight

[iruvyouskyrine]

Also the shims for the diff cost about $14 from nissan with 2 week wait if they have to come from japan. Add the cost of diff oil in and its a fairy cheap way of having a nice tight diff.

Edited May 12, 2013 by iruvyouskyrine