Matts B3 build step 1 N/A

[mattdickmeyer]

I wont be able to get every thing downloaded till tomarrow, sorry be patient!

[freshtiva]

Would you be interested in building a couple of motors for profit ?

[blkfordsedan]

Just for fun, I'm going to take a guess, based on the following info entered into Desktop Dyno. It will be cool to see how far off it is. It should be able to get pretty close if you know the exact head flow #'s and cam specs.

2.795 bore X 3.29 stroke
1.411" intake valve
1.299" exhaust valve
11:1 comp
Fully ported head (estimated port flow based on canted valves & oval ports)
400CFM intake flow (stock throttle body, naturally aspirated)
Small tube header w/muffler
Stock cam (estimated .400"/.400" lift, 256 Deg duration, 116 Deg lobe centers, 4 Deg adv)

97HP @ 5500 (flywheel)
103Lb-Ft @ 4000
92% VE @ 4500

[jmye1524]

You guys with all your numbers...................It's all just for looks.........

[mattdickmeyer]

Just for fun, I'm going to take a guess, based on the following info entered into Desktop Dyno. It will be cool to see how far off it is. It should be able to get pretty close if you know the exact head flow #'s and cam specs.

2.795 bore X 3.29 stroke
1.411" intake valve
1.299" exhaust valve
11:1 comp
Fully ported head (estimated port flow based on canted valves & oval ports)
400CFM intake flow (stock throttle body, naturally aspirated)
Small tube header w/muffler
Stock cam (estimated .400"/.400" lift, 256 Deg duration, 116 Deg lobe centers, 4 Deg adv)

97HP @ 5500 (flywheel)
103Lb-Ft @ 4000
92% VE @ 4500

couldnt flow test head, dont have cyl flow tube thats correct size .o30 off will make numbers way off est. around 100-110 cfm int. 77-85 cfm exh. ...... but very close! i've got a warped head i'm going to bandsaw in pieces to measure port wall thickness to tell how much room i've got to open the ports up towould like to see 140 - 110 cfm. gonna put on turbo next and maybe a cam.

[mattdickmeyer]

b3 cumbustion chamber is penroof design, much like a 4v 4.6 only w/ 2valves . intake valve is shrouded very bad in stock form to promote low lift swirl if you look at my head the chamber was changed quite dramaticly , can be made quite efficient actully.

[blkfordsedan]

couldnt flow test head, dont have cyl flow tube thats correct size .o30 off will make numbers way off est. around 100-110 cfm int. 77-85 cfm exh. ...... but very close! i've got a warped head i'm going to bandsaw in pieces to measure port wall thickness to tell how much room i've got to open the ports up towould like to see 140 - 110 cfm. gonna put on turbo next and maybe a cam.

The flow#'s I was using were a lot higher. Not surprising since the standard flow tables are based on small block "brand X" heads. Even the "low performance stock" tables are based on stock 2.02 heads. Using 110 cfm (@28" H2O drop) intake and 85 cfm exhaust at .500" lift and interpolating lower lift values from there, I used the following flow table. I may be a little aggressive on the lower lift flow:

LIFT INT EXH

.100" 51.7 49.8
.200" 63.0 56.0
.300" 71.0 61.0
.400" 98.0 78.0
.500" 110.0 85.0

The outcome was much better, showing the importance of port velocity and proper matching of components:

109HP @ 6000
105Tq @ 4500
94.4% VE @ 4000

Interesting that it shows 106HP to 109HP from 5500 thru 7000 and over 100Tq from 4000 thru 5500. Nice street motor. Can't wait to see the real results!

[anomoly40]

I've got a blown head gasket B3 sitting in my garage... It is so tempting to do something like this.

[chrisofna]

Do you really need a video or anything to tell us the numbers? Just tell us the numbers already!

[MONSOON]

Yep cause the 1st things everyone is going to do is call shens without pics.

[mattdickmeyer]

Here's my dyno graph! whats nice is how flat the torque curve is, from before 3000 rpm to nearly 5000 rpm, when driving the car I'm at peak torque at virtually any rpm! My intake and cam timing shifted rpm band to usable range, that won't cause damage. These numbers are a little low as mustang dynos tend to give underrated figures.

HP = 71 @ 5200 rpm = 85hp at crank
Torque = 81 @ 3800 rpm = 97ftlbs at crank
(estimate another 10 hp with more tuning, having a lean/rich issue to sort out)





Video to come!!

[chrisofna]

Man, torque comes in llllooooowww. Nice.

[sasquatch]

did you switch to diesel? lol jk... nice

[bhazard]

Wonder how the mpg's are compared to stock. That low end torque is great for mpg.

[anomoly40]

Where could I get some if those valves?