Supercharger for VFSS

[BLACK 346]

Some are better quality than others Mick

The old "Redback" is Australian made out of Australian steel & lasts quite well but I know there is also plenty of cheap crap on the market.

That is true. Some climates are harsher as well, my mild steel exhaust didnt cope well in the NT weather.

[HOLDAN]

Hi guys

Here is where my thinking is at the moment.

My car has only done 20,000kms so I'm not in a hurry to change crank, rods, pistons etc.

I like the Harrop 2300 and I would like to keep the setup under 400-500kW (engine), with a view to ramping it up once the engine is older and I would replace internals, gearbox, diff etc.

Is it possible to have the 2300 installed now, with soft tune and then later on wind it up?

[whitels1ss]

Yes, good choice,

if you fit a Harrop 2300 using the biggest top (supercharger) pulley should give you around 430rwkw, (or a bit more if you fit a blower friendly cam,)


you can do other stuff later & spin up the blower for more boost with a smaller top pulley later is you want.

[HOLDAN]

Yes, good choice,

if you fit a Harrop 2300 using the biggest top (supercharger) pulley should give you around 430rwkw, (or a bit more if you fit a blower friendly cam,)


you can do other stuff later & spin up the blower for more boost with a smaller top pulley later is you want.

Sweet - thanks
I'll crack on with my cunning plan then
Would you still replace valve springs with a soft set up?
And anything else I should replace?

[white lie]

Yes, good choice,

if you fit a Harrop 2300 using the biggest top (supercharger) pulley should give you around 430rwkw, (or a bit more if you fit a blower friendly cam,)


you can do other stuff later & spin up the blower for more boost with a smaller top pulley later is you want.

570+ rwhp on low boost a mild tune? Sounds optimistic to me but maybe I'm wrong.

[whitels1ss]

570+ rwhp on low boost a mild tune? Sounds optimistic to me but maybe I'm wrong.

That's my opinion from an LS3 with a 2300 Harrop running around 10psi, I honestly don't think I am being over optimistic.

LS3's are a great motor & the Harrop has a great intercooler manifold system that works very well.



Dan, will you be getting PowerTorque to do the work?

&

Yes.... Valve springs would be a must IMHO.

[HOLDAN]

That's my opinion from an LS3 with a 2300 Harrop running around 10psi, I honestly don't think I am being over optimistic.

LS3's are a great motor & the Harrop has a great intercooler manifold system that works very well.



Dan, will you be getting PowerTorque to do the work?

&

Yes.... Valve springs would be a must IMHO.

Thank you

Yes probably get Powertorque to do the work or I might take it to Terry at Paramount in Toowoomba - he did all the work on the VE

[whitels1ss]

Thank you

Yes probably get Powertorque to do the work or I might take it to Terry at Paramount in Toowoomba - he did all the work on the VE

I am certainly not knocking your guy "Terry" but I would personally use PowerTorque

simply because I think they would have more experience with fitting, tuning & getting the best out of these.

[HOLDAN]

I am certainly not knocking your guy "Terry" but I would personally use PowerTorque

simply because I think they would have more experience with fitting, tuning & getting the best out of these.

No dramas - I understand what you are saying

[whitels1ss]

Have you decided when you are likely to be getting it done?

[HOLDAN]

Have you decided when you are likely to be getting it done?

In the new year

[white lie]

That's my opinion from an LS3 with a 2300 Harrop running around 10psi, I honestly don't think I am being over optimistic.

LS3's are a great motor & the Harrop has a great intercooler manifold system that works very well.



Dan, will you be getting PowerTorque to do the work?

&

Yes.... Valve springs would be a must IMHO.

10psi I think it will probably make around the power you're saying, is that the lowest the 2300 will go?

[whitels1ss]

10psi I think it will probably make around the power you're saying, is that the lowest the 2300 will go?

Yes, I was thinking those numbers running around 10psi, that seems about the norm.

I don't know even if they supply a big enough pulley to make it run less boost?

I guess it's possible?

[whitels1ss]

Might be worth reading the fitting manual, could give you some more understanding of what goes where & how it all works if you have not seen it before.

You will find it on the lower left side of this page in the "Product Downloads" section.

https://www.harrop.com.au/shop/autom...e-vf-commodore

[Wonky]

Sweet - thanks
I'll crack on with my cunning plan then
Would you still replace valve springs with a soft set up?
And anything else I should replace?

Definitely do valve springs and probably pushrods too, plus I had my crank pinned while it was getting a cam (LS9 cam - complete waste of time and money). Heat is the biggest killer with superchargers so while you are at it definitely add at least thermal blankets - cheap mod while charger being fitted. See https://fiinterchillers.com/thermal-reduction-blanket/ (I have one fitted) and even https://fiinterchillers.com/blower-spacer-plates/ if you can afford it while the charger is being fitted.

My HTV1900 on LS3 makes 390rwkw @ 10 lb boost on APS' very tough dyno. Was 385rwkw before cam but actually lost torque........ I know of at least one other dyno it would run close to 440rwkw on.

Mine runs at about 20C above ambient at cruise which isn't too bad.