Turbo upgrade on RV8

[GasMunkey]

Chilli - just get some knock sensors for added safety

[phazed]

GasMunkey said:

Chilli - just get some knock sensors for added safety

I should as well.

[Chilliman]

GasMunkey said:

Chilli - just get some knock sensors for added safety

Thanks Alex... good advice mate

[Tvr Power]

Chilliman said:

GasMunkey said:

Chilli - just get some knock sensors for added safety

Thanks Alex... good advice mate

Higher compression motors defiantly need to run Knock control

Dom

[Bluebottle]

Tvr Power said:

Higher compression motors defiantly need to run Knock control

Dom

I have heard that setting up knock sensors on these engines is notoriously dificult, is this just myth and do you have experience setting them up on rv8's dom?

[Tvr Power]

Bluebottle said:

Tvr Power said:

Higher compression motors defiantly need to run Knock control

Dom

I have heard that setting up knock sensors on these engines is notoriously dificult, is this just myth and do you have experience setting them up on rv8's dom?

Very difficult because you have to make the engine knock before you can actually wright the program which Mbe do if new programs are required ,this is were your real boffins get involve 14hrs of rolling road knock testing on my 5ltr sag was rather interesting

Dom

[DonkeyApple]

Isn't it easier to program in the sound of the engine running as it should and then simply retard on anomalous sounds within the obvious frequency range? As 'pinking' can occur over a range of frequencies but is easy to detect as a change from norm, while an engine when correct will have static frequency?

[Tvr Power]

DonkeyApple said:

Isn't it easier to program in the sound of the engine running as it should and then simply retard on anomalous sounds within the obvious frequency range? As 'pinking' can occur over a range of frequencies but is easy to detect as a change from norm, while an engine when correct will have static frequency?

Smart Ecus are programmed to listen to knock before the engine actually knocks, technology I love it.

Dom

[SILICONEKID340HP]

Tvr Power said:

DonkeyApple said:

Isn't it easier to program in the sound of the engine running as it should and then simply retard on anomalous sounds within the obvious frequency range? As 'pinking' can occur over a range of frequencies but is easy to detect as a change from norm, while an engine when correct will have static frequency?

Smart Ecus are programmed to listen to knock before the engine actually knocks, technology I love it.

Dom

Does that mean you can set the spark table advanced for economy .

[DonkeyApple]

Tvr Power said:

Smart Ecus are programmed to listen to knock before the engine actually knocks, technology I love it.

Dom

Well, like a dog, it can hear before humans.

But, it seems logical to define a system to react to deviations from a norm than hunt for a specific anomaly?

[v8 racing]

Chilliman said:

GasMunkey said:

Chilli - just get some knock sensors for added safety

Thanks Alex... good advice mate

you going turbo now!

[v8 racing]

SILICONEKID340HP said:

Does that mean you can set the spark table advanced for economy .

Daz an engine wont knock while cruising/economy mode, knock mainly works at high throttle opening

[v8 racing]

phazed said:

Pupp said:

Just out of idle interest has anyone here actually confirmed their claimed 12:1 CR by properly buretting the chamber etc? Custard needed?

Just what I've been told by engine builders.

simply speaking running 12-1 on a rover engine would just be a timebomb! even a race engine wouldnt hack it!

[Tvr Power]

v8 racing said:

SILICONEKID340HP said:

Does that mean you can set the spark table advanced for economy .

Daz an engine wont knock while cruising/economy mode, knock mainly works at high throttle opening

Economy with a Turbo

Dom

[Bluebottle]

Tvr Power said:

Economy with a Turbo

Dom

That was the one thing no one told me when i stuck the blower on...its eff'n thirsty!...oh yeah, you can cruise down the motorway feathering the throttle at get 33 mpg (i did it once!) but most of the time, even a 20 min journey its impossible to NOT press the loud paddle and it will eat a fifteen quids worth easily!

[Tvr Power]

v8 racing said:

phazed said:

Pupp said:

Just out of idle interest has anyone here actually confirmed their claimed 12:1 CR by properly buretting the chamber etc? Custard needed?

Just what I've been told by engine builders.

simply speaking running 12-1 on a rover engine would just be a timebomb! even a race engine wouldnt hack it!

Use to think the same but times have changed with modern smart ecu's, i wouldn’t be worried running 12:1:0 compression with a knock control system..

Dom

[dbv8]

12:1 still seems high to me for Peters engine.
A 4.6 block with 4.0 pistons. I thought we were looking at low 10's CR
The block and heads must have lost a fair few thou to reach 12:1 and squish would be nice and tight.

[v8 racing]

Tvr Power said:

v8 racing said:

phazed said:

Pupp said:

Just out of idle interest has anyone here actually confirmed their claimed 12:1 CR by properly buretting the chamber etc? Custard needed?

Just what I've been told by engine builders.

simply speaking running 12-1 on a rover engine would just be a timebomb! even a race engine wouldnt hack it!

Use to think the same but times have changed with modern smart ecu's, i wouldn’t be worried running 12:1:0 compression with a knock control system..

Dom

sorry dom disagree with that one bud, a rover engine running 12-1? you would have to back the timing off so far you would be loosing power so whats the point?

[Tvr Power]

Bluebottle said:

Tvr Power said:

Economy with a Turbo

Dom

That was the one thing no one told me when i stuck the blower on...its eff'n thirsty!...oh yeah, you can cruise down the motorway feathering the throttle at get 33 mpg (i did it once!) but most of the time, even a 20 min journey its impossible to NOT press the loud paddle and it will eat a fifteen quids worth easily!

Turbos are the thirstiest beasts on the planet.

dOM

[SILICONEKID340HP]

Tvr Power said:

v8 racing said:

SILICONEKID340HP said:

Does that mean you can set the spark table advanced for economy .

Daz an engine wont knock while cruising/economy mode, knock mainly works at high throttle opening

Economy with a Turbo

Dom

I would expect good economy on cruise even with a Turbo bolted on ..

Diesels Have Turbos and they do pretty well.