Can any body tell my why the v10 needs a balance shaft and other mod motors don't.We are doing alot of mods on a v10 we have put in a mustang and wonder if the engine could be balanced and ran without it.It also seems to be the source of the drone sound the v10 makes. CK out our web site at bv10motors.com.98 cobra bought minus eng&trans 2001 v10 custom headers accufab lightning tb 42#ing ax3300 whipple custom intercooler&manifold many other mods working on computer&chip

 

Because it is a 90° V10. It does not have perfect primary balance. Hence, the balance shaft.

Really, no offense, but someone who claims to do so many engine mods should at least know about basic engine design, right?

 

Sorry slap my hand

 

Please take NO OFFENSE! I was just messin' with you!

Welcome to FTE & I hope you stick around to share your experiences with the V10!

In fact...I've got a few questions about your Mustang's V10.

First off your website said this;

"Power– 375 rwhp naturally aspirated, 475 rwhp supercharged.
Torque– 450 lb-ft naturally aspirated, 550 supercharged."

What do you do to get those non-supercharged numbers if you are still working on a chip? The headers?

In one of the pictures, before the SC install, the throttle body is facing opposite of mine. I see that it is a different throttle body but why does it face different than stock? Intake needs?

Lastly, where did you source that V10 from and what year is it?

That looks like one FUN project!

 

Ford could have set up their V-10 like dodge did.The only problem would be that it would sound like *&^$ even compared to Ford's current V-10.Have you ever heard a dodge?It sounds aboout like two small 5cyl.engines .

 

I also believe in my opinion it made the engineering easier to keep a similiar crank profile as the 5.4 since the v10 is just an extended 5.4. I would not run without the balance shaft. However, the older Harley Davidson big twin engines were drag raced many a time on Nitro with lots of vibration. Within the last few years, Harley added a balance shaft to their big twins to smooth out the vibration. I don't know if it actually makes the engine last longer, though, or simply takes all the vibration out. Great question:7

 

Is this why my V10 seems so rough? Between 2000 and 3000 rpm's it is very rough sounding and feeling. If you rev the engine in neutral while moving the clutch pedal in and out, you can feel it in the pedal pretty bad. I didnt know if it was normal for the V10. Above 3000 rpm's it smooths out.

 

>Is this why my V10 seems so rough? Between 2000 and 3000
>rpm's it is very rough sounding and feeling. If you rev the
>engine in neutral while moving the clutch pedal in and out,
>you can feel it in the pedal pretty bad. I didnt know if it
>was normal for the V10. Above 3000 rpm's it smooths out.

I would have it checked. My truck's engine is very, very smooth.

 

Could it be more apparent because mine is a manual transmission? It wouldnt be very noticeable if I didnt push in on the clutch pedal. I cut off the heatshields on the y-pipe as they rattled like crazy when the vibrations occured before (flutter I assumed). It gets a more noticeable vibration at 3,000 rpm's and then it gets smoother. I thought maybe something in the clutch assembly. I bought the truck used with 56,000 miles and the throwout bearing squealed. They put in a new clutch assembly. There was no difference in the old and new assembly as far as vibration goes though.

 

>Because it is a 90° V10. It does not have perfect
>primary balance. Hence, the balance shaft.
>
>Really, no offense, but someone who claims to do so many
>engine mods should at least know about basic engine design,
>right?

I understood and thought we had all agreed that the 90 degree was merely the angle of the cylinder banks, not the firing order. Dodge's V-10 doesn't have a balance shaft, but it definitely has a different firing order (and a goofy exhaust note) so my thought was the Ford had to have the balance shaft to smooth out the firing impulses. Not because it has 10 cylinders. Ken

 

>>Because it is a 90° V10. It does not have perfect
>>primary balance. Hence, the balance shaft.
>>
>>Really, no offense, but someone who claims to do so many
>>engine mods should at least know about basic engine design,
>>right?
>
>I understood and thought we had all agreed that the 90
>degree was merely the angle of the cylinder banks, not the
>firing order. Dodge's V-10 doesn't have a balance shaft, but
>it definitely has a different firing order (and a goofy
>exhaust note) so my thought was the Ford had to have the
>balance shaft to smooth out the firing impulses. Not because
>it has 10 cylinders. Ken


Why couldn't they smooth out firing pulses with a heavier flywheel?
I thought that a balance shaft by itself was unbalanced so that it would counteract the unbalance in the crankshaft?

 

> Why couldn't they smooth out firing pulses with a heavier
>flywheel?
>I thought that a balance shaft by itself was unbalanced so
>that it would counteract the unbalance in the crankshaft?

Yes, it works exactly like that. Normally they're half the weight or less, and their weights are placed in opposition to what other 'shaft'(crankshaft in this case), they're trying to balance. Then if I remember correctly they're spun at double the speed, to offset the difference in weight. Make sense ? Ken

 

We got the motor out of a rolled 2001 with 5k on it, mods included

frp custom headers,
twin 65 bbk tb,
diablo chip(pre supercharger),
90mm maf,
42# motosport injectors,
custom box manifold (used to lower overall height and postion tb in a mustang like location),
bbk cold air fenderwell intake,
blaster ingnition booster,
copper plugs,
bbk 2.5 h pipe w/no cats,
2.5 cobra ex with flowmasters.

Thats most of the mods we did before we supercharged it. We have a chip know but we are still having trouble with it diablo can't seem to be able to raise our speed or rev limiter, they tell me I will need to bring it to there dyno to do it thats why I was asking about the superchips tuner and what it can do to speed and revs, I used a drc4 computer because it didnt have a egr or cat o2 sensor to deal with but i am not sure it this was the best way to go because of the lack of performance files for this computer code. If anybody knows were i can get a list of V10 eec codes that describes what smog eq, trans, or injector size their for please let me know.I have been told some v10s came with 24# injectors? but i have not been able to verify this. please let me know if any does have these and also your eec code.