83qv on dyno

Dyno says 205 to the wheel- just sharing vid.

 

Thanks for sharing. Beautiful sound

 

Thanks, don't think it sounds to bad for a homemade 200.00 exhaust system.

 

[emoji38]not at all!

 

Thanks for sharing, that’s awesome! So how much would that be on the motor?

 

"Old wives rule" learned when I was a kid is that you can more or less bracket it considering that usually you have "about 17% less at the wheels than on the motor", so that would be "about 239 hp" at the motor...
The "about 17% less" is of course not a scientific calculation, but it works rather well...

Rgds

Got the top off the car today in California, Mike? It's snowing in Paris...

 

No, top is on right now but that number about your motor is a very healthy number, I like it. How many miles on your car?

 

...not my car, but I understand it could be Todd6363's, who posted the video. Yes, a very healthy figure.

Rgds

 

26k- no cats been thru everything but rods, mains, rings

 

Cool. Can you post the chart?

 

Put a K&N filter in it and get about 4 - 6 more HP.

(Then take it out after you are done)

 

Here is our experience and charts from 12 years ago

https://www.ferrarichat.com/forum/threads/dyno-s-this-weekend-for-308-intake-tb-mod.88743/

 

Wow, that is an impressive result! (and it sounds great, too )

I'll add a comment here about dyno testing, instead of raising that dead thread - there were quite a few posts discussing the appropriate gear ratio to use, with ideal suggested as being the gear closest to 1:1. Well, actually - ideal is EXACTLY 1:1, not closest - the point is that a straight through transmission as on a front engine rear drive car for example, when in the gear that gives direct drive path through it (ie 1:1), has less drivetrain loss than a transmission gear where the drive is going through a gear set or two, by a fraction of a percent or less difference. The 308 transverse gearbox has no direct drive gear, every gear ratio goes through a gear set, so the chosen gear doesn't actually matter.

With a Dynojet or other inertial dynomometer, the horsepower (actually, torque) is measured by the rate of change of the speed/rpm of the roller. (Torque is measured, horsepower is calculated/derived from the torque values) The heavier the roller, the slower the rate of change, the more accurate/precise the results - but still not as good as a brake dynamometer. The taller the gear, the higher the speed to which the roller has to be accelerated which is similar to a heavier roller in that it dampens transient values) - both increase the load and allows the engine to produce more power at each rpm data point. If one were to dyno a run in each gear, the inertial dyno would usually show lower power in the shorter gears (1st or 2nd) because the engine would rev too quickly to redline - that's especially a problem on turbo engines!

 

nice sound its shame 308 /328 very underpowered i have tubi and test pipe k n N on 89 328 i always hope have 270 at rear wheels but no way lol it still feel like must have that at least 270 i have run against 330 hp inline 6 m3 and stay ahead through 4th gear i want dyno sometime