Pel its all back in....

General Chat About Nitrous Oxide.

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Coops
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Pel its all back in....

Post by Coops » Sun May 16, 2010 8:12 pm

Hi Pel just finished re-installing the nitrous today,
will i be safe to run 75shot on my engine??
i gather ignition dont need retarding, and will NGK7's plugs be ok?

on the old 3.9 set up i ran 150 nitrous jet - 50 fuel jet how does that sound mate?


Regards Tony C (COOPS)
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MS2 V3.57 Ecu mapable efi and wasted spark ignition.
Rotrex C38-91 supercharger and Cossie RS500 Intercooler @ 14psi of Boost. 404 RWHP, (4.6)
New Forged 4.8 V8 kitted out with the dogs Cajones of parts and a procharger D1SC. 2017 :D
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Post by mgbv8 » Sun May 16, 2010 8:45 pm

Coops!!
Bring it to me so I can flow test the fuel delivery mate.

You wont need to worry about ign retard with a 75 shot on a 4.6 to be honest!

It would be useful to check the nitrous delivery wieght against the petrol flow. This way we can get it right quickly.
Or we could do static testing to get a good baseline?

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Post by Coops » Sun May 16, 2010 8:54 pm

Hi Pel,
im busy this week,
and hope to be changing the front suspenssion the weekend coming to eliminate this bloody steering wobble,
so maybe able to pop over one evening before the bank holiday weekend, or somewhen over the bank hol?
as the weekend after the bank hol is classic ford day at the pod.

the pump im using is a bosch 044 motorsport pump,
Regards Tony C (COOPS)
Image
MS2 V3.57 Ecu mapable efi and wasted spark ignition.
Rotrex C38-91 supercharger and Cossie RS500 Intercooler @ 14psi of Boost. 404 RWHP, (4.6)
New Forged 4.8 V8 kitted out with the dogs Cajones of parts and a procharger D1SC. 2017 :D
Sponsored by: www.v8performanceparts.co.uk, www.interpart.biz, www.caprisport.com & www.baileyperformance.co.uk

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Post by Coops » Fri Feb 11, 2011 10:48 pm

Hi Pel,
any news on the other pulsoid mate?
Regards Tony C (COOPS)
Image
MS2 V3.57 Ecu mapable efi and wasted spark ignition.
Rotrex C38-91 supercharger and Cossie RS500 Intercooler @ 14psi of Boost. 404 RWHP, (4.6)
New Forged 4.8 V8 kitted out with the dogs Cajones of parts and a procharger D1SC. 2017 :D
Sponsored by: www.v8performanceparts.co.uk, www.interpart.biz, www.caprisport.com & www.baileyperformance.co.uk

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Post by dbv8 » Mon Feb 14, 2011 8:34 am

I would recommend investing in a set of NGK '8's.
I ran them in my 4.6 TVR and they worked fine on and off gas.

What fuel pressure do you have? It will be interesting to know what your nitrous/fuel ratio is also
10.612 @ 129.77
176.5 standing mile.

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Post by Coops » Mon Feb 14, 2011 4:32 pm

hi mate,
i have 8's here also,
what model of Ngk you using?

my fuel pressure is 36 psi on the rail, backed up with a 200ltr /hr bosch 044 motorsport pump,

ratio on old engine was 2:1, not tried it on the 4.6 yet as Pel has my pulsoids for repair.
Regards Tony C (COOPS)
Image
MS2 V3.57 Ecu mapable efi and wasted spark ignition.
Rotrex C38-91 supercharger and Cossie RS500 Intercooler @ 14psi of Boost. 404 RWHP, (4.6)
New Forged 4.8 V8 kitted out with the dogs Cajones of parts and a procharger D1SC. 2017 :D
Sponsored by: www.v8performanceparts.co.uk, www.interpart.biz, www.caprisport.com & www.baileyperformance.co.uk

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Post by dbv8 » Mon Feb 14, 2011 4:45 pm

Coops wrote:hi mate,
i have 8's here also,
what model of Ngk you using?

my fuel pressure is 36 psi on the rail, backed up with a 200ltr /hr bosch 044 motorsport pump,

ratio on old engine was 2:1, not tried it on the 4.6 yet as Pel has my pulsoids for repair.
BP8ES IIRC.
I have the same pump and similar pressure. I leaned my ratio upto 2.5:1 and regularly ran a 150 shot. It wasnt till i ran a 2 stage system with 150 + 100 and made the mistake of activating the lot on the motorway with no retard in the ignition that i got detonation. It was always fine on the dragstrip but i now have a freshly built forged piston engine and will be fittting megasuirt with a switchable nitrous map so stupid mistakes wont happen again :roll:
10.612 @ 129.77
176.5 standing mile.

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Post by Coops » Mon Feb 14, 2011 5:29 pm

how much retard did you run with the straight 150 shot mate???
i have the maximiser progressive race controller,
i can use the maximiser to retard the ignition on the Vems ecu if need be etc,
Regards Tony C (COOPS)
Image
MS2 V3.57 Ecu mapable efi and wasted spark ignition.
Rotrex C38-91 supercharger and Cossie RS500 Intercooler @ 14psi of Boost. 404 RWHP, (4.6)
New Forged 4.8 V8 kitted out with the dogs Cajones of parts and a procharger D1SC. 2017 :D
Sponsored by: www.v8performanceparts.co.uk, www.interpart.biz, www.caprisport.com & www.baileyperformance.co.uk

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Post by dbv8 » Mon Feb 14, 2011 5:48 pm

Coops wrote:how much retard did you run with the straight 150 shot mate???
i have the maximiser progressive race controller,
i can use the maximiser to retard the ignition on the Vems ecu if need be etc,
For a 150 shot i would retard 6 degrees. The retard needs to come off the timing throughout the rev range from activation of the nitrous and not just at peak.
10.612 @ 129.77
176.5 standing mile.

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Post by Coops » Mon Feb 14, 2011 5:57 pm

i had my retard kick in around 75 shot upwards,
will have to power the controller up to see what the settings were again,
im tempted to run 150 through the 4.6, but not sure if i should or not :lol:
Regards Tony C (COOPS)
Image
MS2 V3.57 Ecu mapable efi and wasted spark ignition.
Rotrex C38-91 supercharger and Cossie RS500 Intercooler @ 14psi of Boost. 404 RWHP, (4.6)
New Forged 4.8 V8 kitted out with the dogs Cajones of parts and a procharger D1SC. 2017 :D
Sponsored by: www.v8performanceparts.co.uk, www.interpart.biz, www.caprisport.com & www.baileyperformance.co.uk

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Post by sidecar » Mon Feb 14, 2011 6:21 pm

Coops wrote:i had my retard kick in around 75 shot upwards,
will have to power the controller up to see what the settings were again,
im tempted to run 150 through the 4.6, but not sure if i should or not :lol:
What state of tune is your 4.6 in, things like pistons etc. I can't comment on whether a 150 shot will be too much as I'm new to this NOS malarkey, I'm interested because I run a 4.6. (Mind you, yours is a progressive setup I believe??) :D

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Post by Coops » Mon Feb 14, 2011 6:39 pm

state of tune mmmmm:
lightened and balanced stock 4.0 pistons with valve cut outs, on lightened and balanced 4.6 rods to bump CR up,
lightened and balanced stock 4.6 crank,
top hat linered 4.6 block,
Crower 50233 cam,
V8D stg3 heads,
ARP head studs,
twin plenum efi system with vems ecu controlling fuel and ignition,
wasted spark ignition (coil packs)
bosch green motorsport injectors (440cc)
Regards Tony C (COOPS)
Image
MS2 V3.57 Ecu mapable efi and wasted spark ignition.
Rotrex C38-91 supercharger and Cossie RS500 Intercooler @ 14psi of Boost. 404 RWHP, (4.6)
New Forged 4.8 V8 kitted out with the dogs Cajones of parts and a procharger D1SC. 2017 :D
Sponsored by: www.v8performanceparts.co.uk, www.interpart.biz, www.caprisport.com & www.baileyperformance.co.uk

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Post by dbv8 » Mon Feb 14, 2011 8:28 pm

You should be able to step up to a 150 shot.

A bottle heater and pressure switch will keep the bottle up at a healthier 950psi and more importantly constant.

A single 5mm nylon line from the bottle might not be enough for 150.
I finally got a true 150 shot with twin bottles feeding a y-splitter into the pulsoid.
Keep doing checks on the plugs etc as you step up the power and you should be fine.

My car ran 13.0 @ 106 NA and 11.6 @ 125 best with the 150 shot.
10.612 @ 129.77
176.5 standing mile.

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Post by sidecar » Mon Feb 14, 2011 9:21 pm

Coops wrote:state of tune mmmmm:
lightened and balanced stock 4.0 pistons with valve cut outs, on lightened and balanced 4.6 rods to bump CR up,
lightened and balanced stock 4.6 crank,
top hat linered 4.6 block,
Crower 50233 cam,
V8D stg3 heads,
ARP head studs,
twin plenum efi system with vems ecu controlling fuel and ignition,
wasted spark ignition (coil packs)
bosch green motorsport injectors (440cc)

Cheers for the info! Similar to my lump in some respects...but not in others!

mgbv8
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Post by mgbv8 » Tue Feb 15, 2011 11:29 am

Coops wrote:Hi Pel,
any news on the other pulsoid mate?
Nitrous pulsoid just has fair wear and tear. I'm putting all new insides in both of them. You cant change the seat washer so you fit complete new pistons and o rings.

I'll hopefully get them rebuilt by the weekend as I now have a work bench to play on :)

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