Brettus turbo 111 (the ultimate Renesis turbo ?)
#252
Went in to see how it was going yesterday . Just the downpipe and WG pipe to do . ETA mid next week . Bit disappointed with the inability to go big on the inlet and outlet pipework . Having the WG forward has really compromised that part of the design .
So , it better spool up good cuz top end may be a bit disappointing .
So , it better spool up good cuz top end may be a bit disappointing .
#256
forgive me if i've missed it but are you running 1600cc injectors for this power level? they seem to be about right for this setup, keeping the 2 stock primaries?
#258
I must have worked something out wrong then, gonna go check my math,
*edit* just worked it out again and i'm coming up with around 5100cc required working on AFR of 10:1 to be on the safe side...
Last edited by shambo; 07-28-2015 at 04:09 PM.
#260
Just using the matchbot program it comes to 280lb/hr at 11.0 AFR for 450 flywheel hp
gasoline specific gravity = 0.74 so (280/0.74 )/2.2lbs/kg /60 = 2.866 L/min
=2866ccs
Leaves me no headroom so I will probably need to upgrade
Last edited by Brettus; 07-28-2015 at 06:00 PM.
#262
No respecter of malarkey
iTrader: (25)
62 lb/min @ 10:1
62 lb/min air mass / 10 = 6.2 lb/min = 372 lb/hr fuel mass required
372 lb/hr / 0.85 max injector duty cycle = 437.7 lb/hr = ~4600 cc/min injector capacity
.
62 lb/min air mass / 10 = 6.2 lb/min = 372 lb/hr fuel mass required
372 lb/hr / 0.85 max injector duty cycle = 437.7 lb/hr = ~4600 cc/min injector capacity
.
2800 will be marginal for 400whp but 5100 is way overkill ...
Just using the matchbot program it comes to 280lb/hr at 11.0 AFR for 450 flywheel hp
gasoline specific gravity = 0.74 so (280/0.74 )/2.2lbs/kg /60 = 2.866 L/min
=2866ccs
Leaves me no headroom so I will probably need to upgrade
Just using the matchbot program it comes to 280lb/hr at 11.0 AFR for 450 flywheel hp
gasoline specific gravity = 0.74 so (280/0.74 )/2.2lbs/kg /60 = 2.866 L/min
=2866ccs
Leaves me no headroom so I will probably need to upgrade
#263
No respecter of malarkey
iTrader: (25)
2866 cc/min = 273 lb/hr = 4.55 lb/min max capacity
4.55 lb/min x 0.85 max duty cycle = 3.87 lb/min max capacity available
60.2 lb/min air mass / 3.87lb/min fuel mass = 15.6:1 AFR
Seems like plenty of off-with-your-head room ... lol
.
4.55 lb/min x 0.85 max duty cycle = 3.87 lb/min max capacity available
60.2 lb/min air mass / 3.87lb/min fuel mass = 15.6:1 AFR
Seems like plenty of off-with-your-head room ... lol
.
Last edited by TeamRX8; 07-28-2015 at 07:13 PM.
#264
I've already run it to 375whp with no lean out ..........so do the math on that
It's only 55lb/min air (according to matchbot) at 11.0 AFR . Work that out at 100% DC and you can see ............... no headroom . But it's not going to lean out like you suggest
Last edited by Brettus; 07-28-2015 at 07:37 PM.
#265
Driving my unreliable rx8
2800 will be marginal for 400whp but 5100 is way overkill ...
Just using the matchbot program it comes to 280lb/hr at 11.0 AFR for 450 flywheel hp
gasoline specific gravity = 0.74 so (280/0.74 )/2.2lbs/kg /60 = 2.866 L/min
=2866ccs
Leaves me no headroom so I will probably need to upgrade
Just using the matchbot program it comes to 280lb/hr at 11.0 AFR for 450 flywheel hp
gasoline specific gravity = 0.74 so (280/0.74 )/2.2lbs/kg /60 = 2.866 L/min
=2866ccs
Leaves me no headroom so I will probably need to upgrade
#266
#268
No respecter of malarkey
iTrader: (25)
Running logs already and no pics? What is the spoolup looking like?
#269
#270
Wut? Have no recollection of him running anything other than the OE pump bypass which is typically near 60 psig, maybe a little higher with a super high flow fuel pump due to bypass flow restriction. The boost pressure has to be subtracted from fuel pressure to determine the net injector working fuel pressure.