To squirt or to force
Discussion
Got a V.low miles 4.5 RV8. Had thoughts of N2O injection [progressive] as quick and cheapish way to bit more power. Thought may have heads off to 'O' ring as precaution. Then someone gave me details of superchargers [paxton etc] that can be put to side of block rather than on top. Seem reasonably priced but know that really need to lower compression, change rods and toughen crank. [price creeps up] Anyone gone down either route? Any thoughts? Want to keep as 4.5 as thoughts are for easier revving having 10mm shorter stroke than 5.0. Am I right in this?
Cheers.
Cheers.
Going down this route with the 520 right now. It all depends on how much power increase you want and how much the budget is. I'm targeting for 600 bhp and then knocking back to around the 500 mark ish. John Eales will be setting it up and doing the engine rebuild/overhaul. Plan to use a charge cooler, water injection and the existing 8 throttle bodies with DTA system. The compression will be lowered and the cam changed for something a bit milder. All the other goodies are already on.
The plumbing and positioning is a bit interesting. I have to machine some new mounts, swap PAS pumps and move the ancillaries around. Not rocket science but still a lot of work and potential expence.
The plumbing and positioning is a bit interesting. I have to machine some new mounts, swap PAS pumps and move the ancillaries around. Not rocket science but still a lot of work and potential expence.
All depends how must power you're after and then what kind of pistons you're running. a stock rover bottom end with std 94mm pistons should take about 0.7 Bar of boost reasonably reliably with little or no mods other than to correct the fuelling and spark. With this you'll probably get around 280-300Bhp, possibly more a bit with water injection or an intercooler.
Its when you're looking at bigger boost numbers you'll have to lower compression, fit forged pistons etc etc
Matt
Its when you're looking at bigger boost numbers you'll have to lower compression, fit forged pistons etc etc
Matt
shpub said:
Going down this route with the 520 right now. It all depends on how much power increase you want and how much the budget is. I'm targeting for 600 bhp and then knocking back to around the 500 mark ish. John Eales will be setting it up and doing the engine rebuild/overhaul. Plan to use a charge cooler, water injection and the existing 8 throttle bodies with DTA system. The compression will be lowered and the cam changed for something a bit milder. All the other goodies are already on.
The plumbing and positioning is a bit interesting. I have to machine some new mounts, swap PAS pumps and move the ancillaries around. Not rocket science but still a lot of work and potential expence.
Sounds like "the Thorpedo" will have a rival
What will we call yours : The Steve Heath ICBM (Inter continental Balistic Missile)
rev-erend said:Thorpedo a Racer, 520 - Sprint car - doubt either will do th other disipline!
Going down this route with the 520 right now. It all depends on how much power increase you want and how much the budget is. I'm targeting for 600 bhp and then knocking back to around the 500 mark ish. John Eales will be setting it up and doing the engine rebuild/overhaul. Plan to use a charge cooler, water injection and the existing 8 throttle bodies with DTA system. The compression will be lowered and the cam changed for something a bit milder. All the other goodies are already on.
The plumbing and positioning is a bit interesting. I have to machine some new mounts, swap PAS pumps and move the ancillaries around. Not rocket science but still a lot of work and potential expence.
Sounds like "the Thorpedo" will have a rival
What will we call yours : The Steve Heath ICBM (Inter continental Balistic Missile)
Forget NOS - just for fun - Blower sound good. Agree better on 4.5 than 5.0.
shpub said:
Going down this route with the 520 right now. It all depends on how much power increase you want and how much the budget is. I'm targeting for 600 bhp and then knocking back to around the 500 mark ish. John Eales will be setting it up and doing the engine rebuild/overhaul. Plan to use a charge cooler, water injection and the existing 8 throttle bodies with DTA system. The compression will be lowered and the cam changed for something a bit milder. All the other goodies are already on.
The plumbing and positioning is a bit interesting. I have to machine some new mounts, swap PAS pumps and move the ancillaries around. Not rocket science but still a lot of work and potential expence.
Sounds way above me Steve, but be really interested to know how it goes. Keep us posted. [pics would be good] [especially the belt routing]
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