The V8 Owners Forum - Forum Index The V8 Owners Forum -
Welcome to the well-known V8 Owners Forum, no matter what you drive if its V8 Powered you'll be made very welcome.
 
 GarageGarage   1/4 Mile Table1/4 Mile Table 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

2 stage on a rover
Goto page Previous  1, 2, 3, 4  Next
 
Post new topic   Reply to topic    The V8 Owners Forum - Forum Index -> Nitrous Oxide Area
View previous topic :: View next topic  
Author Message
bones
Gold Member
Gold Member


Joined: 22 Nov 2006
Posts: 1551
Location: essex


PostPosted: Wed Jun 16, 2010 8:44 am    Post subject: Reply with quote

Hi Pel, info you need. fuel pump is EDELBROCK free flow 120gph, this pump has a built in reg so that set to 8psi, fuel lines are 3/8", reg for carb is a Holley one (and this one works) that set to 4 1/2psi . Sd1 has in-tank pump which sucks up the fuel ,then to edelbrock pump that goes to a Y-piece up near bulk head that feeds the nos fuel and carb side which has reg fitted , nos side has another y-piece to supply both fuel soleniods. Yes they are nos plates, both plates are cheater items. All fuel line is 3/8" . Have i missed anything ?? Confused rich
_________________
Nightbreed racing, http://www.youtube.com/watch?v=NJoUTZ8UUps
Back to top
View user's profile Send private message
mgbv8
Gold Member
Gold Member


Joined: 18 Nov 2006
Posts: 5325


1975 MG MGB GT V8

PostPosted: Wed Jun 16, 2010 4:45 pm    Post subject: Reply with quote

Sounds ok for the amount of spray you want to use. But I would still try a flow test of petrol through the plates at full blast to mkae sure you are getting enough fuel when you need it with the gas.
_________________
Perry Stephenson
MGB GT + Rover V8
9.62 @ 137.37mph
Now looking for 8 seconds with a SBC engine
http://www.youtube.com/watch?v=nVscbPHgue0&list=UUqIlXfSAoiZ--GyG4tfRrjw

https://www.youtube.com/watch?v=eg3avnsNKrc&index=2&list=FLqIlXfSAoiZ--GyG4tfRrjw
Back to top
View user's profile Send private message Send e-mail
bones
Gold Member
Gold Member


Joined: 22 Nov 2006
Posts: 1551
Location: essex


PostPosted: Thu Jun 17, 2010 6:34 am    Post subject: Reply with quote

i will try and do the fuel test and let you know. If i was to go for example 125 of gas on 2nd stage could i use a 150 fuel jet ??? Smile rich
_________________
Nightbreed racing, http://www.youtube.com/watch?v=NJoUTZ8UUps
Back to top
View user's profile Send private message
mgbv8
Gold Member
Gold Member


Joined: 18 Nov 2006
Posts: 5325


1975 MG MGB GT V8

PostPosted: Thu Jun 17, 2010 9:36 pm    Post subject: Reply with quote

Use whatever fuel jet gives you at least 125 ml of petrol in 10 seconds. Ideally try 150 hp of fuel to the 125hp of gas as a safe rich starting point.
_________________
Perry Stephenson
MGB GT + Rover V8
9.62 @ 137.37mph
Now looking for 8 seconds with a SBC engine
http://www.youtube.com/watch?v=nVscbPHgue0&list=UUqIlXfSAoiZ--GyG4tfRrjw

https://www.youtube.com/watch?v=eg3avnsNKrc&index=2&list=FLqIlXfSAoiZ--GyG4tfRrjw
Back to top
View user's profile Send private message Send e-mail
bones
Gold Member
Gold Member


Joined: 22 Nov 2006
Posts: 1551
Location: essex


PostPosted: Sat Jun 19, 2010 11:54 am    Post subject: Reply with quote

Cheers Pel, a 125 shot on 2nd stage would be the limit i suppose, but with a 50 at 1st stage total would be 175. That should see it into the 12s, or make a mess of the engine Very Happy rich
_________________
Nightbreed racing, http://www.youtube.com/watch?v=NJoUTZ8UUps
Back to top
View user's profile Send private message
bones
Gold Member
Gold Member


Joined: 22 Nov 2006
Posts: 1551
Location: essex


PostPosted: Wed Jan 26, 2011 1:04 pm    Post subject: Reply with quote

Hi all, am i right in thinking the cheater soleniods are good for upto 400 shot, not that im going that much, just a 275 max
_________________
Nightbreed racing, http://www.youtube.com/watch?v=NJoUTZ8UUps
Back to top
View user's profile Send private message
bones
Gold Member
Gold Member


Joined: 22 Nov 2006
Posts: 1551
Location: essex


PostPosted: Sun Jan 30, 2011 11:51 pm    Post subject: Reply with quote

Hi all, well that last post was poop, cheater stuff is only good for a max of 250. So that puts pay to a 275 shot. Might have to use the second stage gear for the extra if i need it . Confused rich
_________________
Nightbreed racing, http://www.youtube.com/watch?v=NJoUTZ8UUps
Back to top
View user's profile Send private message
mgbv8
Gold Member
Gold Member


Joined: 18 Nov 2006
Posts: 5325


1975 MG MGB GT V8

PostPosted: Mon Jan 31, 2011 10:08 am    Post subject: Reply with quote

You wont know actual max flow unless you waste some nitrous mate.
You could take the jets out of your plate and flow test the open solenoids to see what they flow and then flow through the plate with no jets etc.
_________________
Perry Stephenson
MGB GT + Rover V8
9.62 @ 137.37mph
Now looking for 8 seconds with a SBC engine
http://www.youtube.com/watch?v=nVscbPHgue0&list=UUqIlXfSAoiZ--GyG4tfRrjw

https://www.youtube.com/watch?v=eg3avnsNKrc&index=2&list=FLqIlXfSAoiZ--GyG4tfRrjw
Back to top
View user's profile Send private message Send e-mail
bones
Gold Member
Gold Member


Joined: 22 Nov 2006
Posts: 1551
Location: essex


PostPosted: Mon Jan 31, 2011 12:35 pm    Post subject: Reply with quote

I havent a clue how to test the max flow, the plate is only good for 250, i think to much above that the sray bars tend to split. And waste nitrous Shocked at 60 a re-fill ,are you mad sir , Very Happy rich
_________________
Nightbreed racing, http://www.youtube.com/watch?v=NJoUTZ8UUps
Back to top
View user's profile Send private message
ged
Gold Member
Gold Member


Joined: 10 Feb 2009
Posts: 641
Location: North Wales via NZ


PostPosted: Mon Jan 31, 2011 9:46 pm    Post subject: Reply with quote

bones wrote:
: at 60 a re-fill ,are you mad sir , Very Happy rich


Hi Rich,

That's the reason I haven't used N20 on my car. I can't afford 60 a day on top of fuel. Rolling Eyes Laughing

Regards Ged
Back to top
View user's profile Send private message
bones
Gold Member
Gold Member


Joined: 22 Nov 2006
Posts: 1551
Location: essex


PostPosted: Tue Feb 01, 2011 11:06 am    Post subject: Reply with quote

I hope 1 bottle will last 4 runs Shocked ,but ive probley got that wrong aswell. It might be 60 for a refill, but the smile it puts on your is priceless Sad rich
_________________
Nightbreed racing, http://www.youtube.com/watch?v=NJoUTZ8UUps
Back to top
View user's profile Send private message
mgbv8
Gold Member
Gold Member


Joined: 18 Nov 2006
Posts: 5325


1975 MG MGB GT V8

PostPosted: Tue Feb 01, 2011 8:55 pm    Post subject: Reply with quote

bones wrote:
I havent a clue how to test the max flow, the plate is only good for 250, i think to much above that the sray bars tend to split. And waste nitrous Shocked at 60 a re-fill ,are you mad sir , Very Happy rich


Who says the spray bars split??
I havent heard that one before. The amount you can flow depends on 3 main things. Nitrous line size, solenoid capacity, and the number of holes in the spray bars. I'm not including jets here as this is just to discuss actual max flow rate of the nitrous through your system.

The test is simple. But you will need acurate scales like mine. These days you can buy postal sclaes on ebay that are really good for about 30 quid.

To do the test you will need all the stuff connected. But the spray bar plate will need to be in free air outside the manifold. You need at least 850psi in the bottle. Weigh the bottle first. Then spray full on for 5 seconds. Weigh the bottle again.

The amount of weight loss of the bottle can be used to give a pretty accurate hp rating based on the jets you have fited.

Then we do a fuel flow test to make sure there is enough to match the nitrous at the right jet settings. Then run the fuel test again with even bigger jets or no jets at all to see what the max you can get from the fuel system is.
The fuel side is the most important to be honest.
My nos ystem maxes out at 300hp. but my fuel side will flow 410hp. So i know I have some in reserve to be able to start testing with a rich mix so I can work back down from there Smile

If you decide to do a flow test we can discuss in more detail.

Regards
Pel
_________________
Perry Stephenson
MGB GT + Rover V8
9.62 @ 137.37mph
Now looking for 8 seconds with a SBC engine
http://www.youtube.com/watch?v=nVscbPHgue0&list=UUqIlXfSAoiZ--GyG4tfRrjw

https://www.youtube.com/watch?v=eg3avnsNKrc&index=2&list=FLqIlXfSAoiZ--GyG4tfRrjw
Back to top
View user's profile Send private message Send e-mail
bones
Gold Member
Gold Member


Joined: 22 Nov 2006
Posts: 1551
Location: essex


PostPosted: Wed Feb 02, 2011 11:14 am    Post subject: Reply with quote

I think we will be talking in more detail on the test side. The cheater fuel soleniods are ok for 400hp max, nos soleniod is 200 hp. So looks like the testing will be done. Smile rich
_________________
Nightbreed racing, http://www.youtube.com/watch?v=NJoUTZ8UUps
Back to top
View user's profile Send private message
bones
Gold Member
Gold Member


Joined: 22 Nov 2006
Posts: 1551
Location: essex


PostPosted: Thu Feb 03, 2011 11:25 am    Post subject: Reply with quote

Will i need a 2nd fuel tank just for the nitrous side of things ??. Confused rich
_________________
Nightbreed racing, http://www.youtube.com/watch?v=NJoUTZ8UUps
Back to top
View user's profile Send private message
mgbv8
Gold Member
Gold Member


Joined: 18 Nov 2006
Posts: 5325


1975 MG MGB GT V8

PostPosted: Thu Feb 03, 2011 8:29 pm    Post subject: Reply with quote

bones wrote:
Will i need a 2nd fuel tank just for the nitrous side of things ??. Confused rich


If your main fuel pump has enough flow to feed the engine flat out with enough in reserve to feed the nos side + 40% you will be ok.

If not then you could just make another tapping into the tank for a second fuel pump. Or stick a small 1 gallon tank in the boot to feed the nos side with its own pump...
I think you are serious about getting this 11 second PB aint ya??

Pel
_________________
Perry Stephenson
MGB GT + Rover V8
9.62 @ 137.37mph
Now looking for 8 seconds with a SBC engine
http://www.youtube.com/watch?v=nVscbPHgue0&list=UUqIlXfSAoiZ--GyG4tfRrjw

https://www.youtube.com/watch?v=eg3avnsNKrc&index=2&list=FLqIlXfSAoiZ--GyG4tfRrjw
Back to top
View user's profile Send private message Send e-mail
Display posts from previous:   
Post new topic   Reply to topic    The V8 Owners Forum - Forum Index -> Nitrous Oxide Area All times are GMT
Goto page Previous  1, 2, 3, 4  Next
Page 2 of 4

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
Make payments with PayPal - it's fast, free and secure!


Copyright www.v8forum.co.uk 2006. All Rights Reserved,
Forum Disclaimer: Any posts in the V8 Forum are posted by individuals acting in their own right and do not necessarily reflect the views of the owner, administrators or moderators.