Induction mods - 500 specific

[Chilliman]

I've read all the threads I can find regarding induction mods and the various products available, and the varying effects experienced, but not (unless I've missed it) this particular combo specific to the 500:

ACT Induction hose kit with K&N filter
ACT 44mm Superflare trumpets

Has anybody fitted this combo to a 500 and with what results (Improved response/driveability/possibly slight improvement in guzzling etc, I'm not looking for out and out power increases, tho' would consider it a usefull by-product)

Plus, Also considering supplementing the above with the SC power Plenum spacer & Insulating gasket. Any views on this, I can see the simple thermal benefit of the insulating gasket but would adding the plenum spacer enhance or reduce the benefits gained by fitting the Superflare trumpets ?? I'll put this question to ACT but would appreciate any comments you guys might have.... Many thanks......

[markreilly]

I have twin plenum,trumpets,MA Tornado Chip,K&N filter and induction hose,massive increase in response

[V8FROG]

same question here as i am waiting for my ACT carbon trupets to arrive next week.i ask TIM about the spacer but he couldn't answer me.the aact trumpets are already shorter so no sure how it will feel with the spacer.anyone has the answer???

Chilliman said:

I've read all the threads I can find regarding induction mods and the various products available, and the varying effects experienced, but not (unless I've missed it) this particular combo specific to the 500:

ACT Induction hose kit with K&N filter
ACT 44mm Superflare trumpets

Has anybody fitted this combo to a 500 and with what results (Improved response/driveability/possibly slight improvement in guzzling etc, I'm not looking for out and out power increases, tho' would consider it a usefull by-product)

Plus, Also considering supplementing the above with the SC power Plenum spacer & Insulating gasket. Any views on this, I can see the simple thermal benefit of the insulating gasket but would adding the plenum spacer enhance or reduce the benefits gained by fitting the Superflare trumpets ?? I'll put this question to ACT but would appreciate any comments you guys might have.... Many thanks......

[V8FROG]

same question here as i am waiting for my ACT carbon trupets to arrive next week.i ask TIM about the spacer but he couldn't answer me.the aact trumpets are already shorter so no sure how it will feel with the spacer.anyone has the answer???

Chilliman said:

I've read all the threads I can find regarding induction mods and the various products available, and the varying effects experienced, but not (unless I've missed it) this particular combo specific to the 500:

ACT Induction hose kit with K&N filter
ACT 44mm Superflare trumpets

Has anybody fitted this combo to a 500 and with what results (Improved response/driveability/possibly slight improvement in guzzling etc, I'm not looking for out and out power increases, tho' would consider it a usefull by-product)

Plus, Also considering supplementing the above with the SC power Plenum spacer & Insulating gasket. Any views on this, I can see the simple thermal benefit of the insulating gasket but would adding the plenum spacer enhance or reduce the benefits gained by fitting the Superflare trumpets ?? I'll put this question to ACT but would appreciate any comments you guys might have.... Many thanks......

[SILICONE KID]

You could go for the 72mm plenum,45mm trumpet base with short aluminuim trumpets and a port matched inlet manifold for about £450..and fit the £17.50 Insulator gasket from TVR Power..

[slideways]

SILICONE KID said:

You could go for the 72mm plenum,45mm trumpet base with short aluminuim trumpets and a port matched inlet manifold for about £450..and fit the £17.50 Insulator gasket from TVR Power..

What sort of power would a 500 make with those mods?

[dbv8]

slideways said:

What sort of power would a 500 make with those mods?

Certainly no more than 338

[EggsBenedict]

stop messing about and get this:

http://cgi.ebay.co.uk/Rover-V8-Injection-X-over-Sy...

[macdeb]

dbv8 said:

Certainly no more than 338

[blitzracing]

Dont forget the stock AFM bottle necks form 250 -270bhp onwards.

[SteveGRF]

Slide

You should get approx 300 - 320 BHP dependant on cam etc, mine made 315 BHP with the same mods & H404 cam; now makes 308 BHP with same induction but Stealth cam.

[domV8]

Quinny said:

How long is a piece of string

338 metres

[Chilliman]

Blitz, as per my original post I was looking at the ACT induction mods, however the guys just above are I presume talking about V8 Dev kit.. either way, can you clarify your comment above regarding the AFM bottling at 270-280 bhp ? In other words, lets say, (fingers crossed) that my healthy 500 is actually putting out 280, are you saying that the induction mods discussed won't demonstrate their full potential (even if it's say another 10 bhp or so)because the AFM will not provide adequate airflow ? I am primarily looking to smooth out engine response etc rather that outright power increase, however I'm now curious about how much of a restriction the AFM will be.... Thanks in advance....

[spend]

AFM restriction has been covered years ago, & by folks with rolling roads rather than hairdryer tinkerers They aren't like s shut off valve, restriction means they gradually sap power from @270bhp onwards just like having to suck hard through a partially blocked straw.

[blitzracing]

Hair dryers gone petrol powered now to try and reach that elusive saturation point on the 5AM, but the wife does not like me using it in the bedroom.

As for the restriction point this is all the data I have on a highly tuned 4.5 motor . The two curves are for the 5AM (This one even had 5mm skimmed out of it)peaking at 280 BHP and a Torque flow tube that is so big that there is very little pressure drop across it going to 300 BHP. Both units had been adjusted by altering the electronics to get the peak fueling correct although both failed at less than full power fueling, so both where eventually binned. The losses on bigger engines may not be so bad, but Ive not got any rolling road data for these though I gather using the Bosch or Sagem 20AM meters will release around 10BHP with 15lb/ft on the average 5.0 Litre motor.

[haircutmike]

After completing a session at Brands last week, I was checking the engine over and was amazed how ice cold the plenum was!

Surely an insulator wouldn't have made the damnedest difference?

Also, after fitting V8D heads, inet manifod, trumpets etc and running a Typhoon cam, ACT induction etc, should I be binning the 5AM AFM in favour of something else?

[roysum]

haircutmike said:

After completing a session at Brands last week, I was checking the engine over and was amazed how ice cold the plenum was!

Surely an insulator wouldn't have made the damnedest difference?

Also, after fitting V8D heads, inet manifod, trumpets etc and running a Typhoon cam, ACT induction etc, should I be binning the 5AM AFM in favour of something else?

So how was performance Peter after your mods ?

Roy

[haircutmike]

Hi Roy.

Quicker all round with more top end delivery!

Was hitting a shade under 130 down the straight with a 57 second lap time which I was pleased with.

Will RR it next week.

Edited by haircutmike on Saturday 19th February 19:24

[blitzracing]

I borrowed a great big petrol powered leaf blower to see how the AFM peaks out. Basically you can reach 5.76 volts, but at that point the restriction of the AFM was so much it blew off the end of of the blower like a cork from a bottle much to my surprise. To put this in perspective a 5ltr motor reaches 4.98 volts, so it must be very near peak airflow. Ive got a re-calibrated Bosch replica (to replicate the 5AM's voltage response), with a much bigger airway, so Ill run this up to 4.98 volts, and then put the 5AM in series and see how much the voltage drops, that should give me some idea of the level of restriction.

[SILICONE KID]

I have a piece of 3" heat resistant pipe , smooth flow ,no restriction.