dual 255's or single 450 walbro
#1
Newbie
Thread Starter
dual 255's or single 450 walbro
Rigth now.. im between these 2 setups... i will use 93oct low boost and VP fuel (q16) for high boost... i want 600-650 hp on high boost...
The single 450 walbro will do The work for the 93 oct and high boost ?
Or i need dual 255's?
The single 450 walbro will do The work for the 93 oct and high boost ?
Or i need dual 255's?
#6
On pump gas you should be able to achieve that without issue. I am using a 450 with a fp red on ethanol, but i dont like how they draw so many amps. Its starting to melt my 30amp relay, so im going to go to 10G wire on a 40amp relay.
Trending Topics
#8
Newbie
iTrader: (3)
https://www.evolutionm.net/forums/ev...evo-8-9-a.html
I think I saw Buschur say something along the lines that an OEM FPR and rail is good to 700 whp. Could be wrong though....
#10
Evolved Member
To be on the same page here, quoted hp figures of U.K DynoDynamics and Mustang Dyno U.S, of 560whp or 700 flywheel aproximate hp, is very do-able on single 400 walbro fuel pump even if you use ethanol, 450 is an overkill and as previously stated the main issue is the stock lines as pushing a properly done setup of 1000hp cabability on stock fuel lines on the above specific dynos one will reach to the inevitable conclusion that at around 750-800hp flywheel power lies serious insufficiency of fuel , especially on ethanol, thus the excess flow of a 450 walbro goes to waste.
Marios
Marios
Last edited by Evo8cy; Jan 15, 2015 at 08:23 AM.
#13
Evolving Member
iTrader: (1)
Join Date: Jun 2014
Location: Clarksville, TN
Posts: 499
Likes: 0
Received 0 Likes
on
0 Posts
I only made 613hp on E85 with a single 450. Pump was close to maxed out. chamelieon has achieved high hp with a single 450 using a wire upgrade as mentioned. Without wire upgrade you'll need dual pumps, either one external and one inline or Busher's double 255 setup.
#14
Evolved Member
iTrader: (30)
When you math it out the 255s are still a better deal and drive better with less other mods.
#15
Evolved Member
Hardwiring either 400 or 450 walbro is needed for peace of mind. Although I am sure there are setups out there that have done 650 flywheel on pump fuel on the above mentioned dynos without hardwiring the 400 walbro pump, but in order to take full advatntage of the cababilities of the above pumps and for peace of mind as I said it is better to hardwire them.
To make things clearer to those who have not understood my stream of thought, around 800 hp ( i repeat quoted figures are of the specific dynos) is possible on stock fuel lines on pump fuel or other oxygenated premium high octane fuel, on a hardwired 400 or 450 walbro, with the second being able of even more. Above 700hp one needs to change FPR and fuel rail, and above 800hp fuel lines also.
If one just drops in the 400 walbro he can do on a properly done setup around 680-700 flywheel hp on pump gas or any other fuel equivalent apart from corn juice-ethanol or a combo of the two such as the E85, even if he uses the stock FPR and stock lines.
Marios
To make things clearer to those who have not understood my stream of thought, around 800 hp ( i repeat quoted figures are of the specific dynos) is possible on stock fuel lines on pump fuel or other oxygenated premium high octane fuel, on a hardwired 400 or 450 walbro, with the second being able of even more. Above 700hp one needs to change FPR and fuel rail, and above 800hp fuel lines also.
If one just drops in the 400 walbro he can do on a properly done setup around 680-700 flywheel hp on pump gas or any other fuel equivalent apart from corn juice-ethanol or a combo of the two such as the E85, even if he uses the stock FPR and stock lines.
Marios
Last edited by Evo8cy; Jan 15, 2015 at 08:42 AM. Reason: typo