1978 Ferrari 308 GT4 Dino being Dyno tested

This is my 1978 Ferrari 308 GT4 being dyno'd at TDI plc. The old car still produces the same power as it did from new!

Category:

Autos & Vehicles

Tags:

• ferrari
• 308
• gt4
• Dino
• dyno
• TDI
• plc
• bhp
• torque
• rpm
• Nick
• Truman

[Nicktruman]

Hi, i think you are right! I am having trouble finding an ignition curve! The car really needs setting up properly, but so many things going on!

Regards

Nick

[Nicktruman]

I Don't think so, redline is set to 7800 on the rev limiter and the carbs were spot on.

[MNExotics]

That is the oddest dyno I have seen. Does that one provide just rear axle power or does it claculate the drive train as well. Either way I look at it I would trust a true roller dyno or an engine stand dyno more then this one.

[xsonz2]

tehe... my 3.0 produces more torque...

Just an observasion, not an insult. I dont know much about later model Dino's, is it a V6, or an inline?

[GTI1dasOriginal]

You´re welcome.

Note: Have you checked the valves-gap when opening and closing too? They -if set too wide- are responsible for "false-air" (not closing the cilinder or cilinders properly, causing low compression and letting the air-fuel mixture flow back through the air intake)

If set much too wide they´ll cause a "ticking noise" from touching the pistons.

If any more questions, I´ll be glad to help you :-)

[GTI1dasOriginal]

tip: the engine shouldn´t "rumble" at a set point. Say: 3.500 rpm. If you get it to sound "serene" at that point, you´ll probably get it right on the mark. after that check it at stationary, kill the engine and listen again. Last chech at 5.000 rpm and you´re done!

good luck.

[GTI1dasOriginal]

IMHO: I surely believe the carbs were spot on. The ignition-timing surely wasn´t. It backfired. cause: the ignition.

I´m convinced you can get the ignition spot on just by hearing what the engine does at different revs, instead of monitoring it with a strobosccope. Remember the mileage of the engine and how it´s driven influences the timing-point dramaticaly.

Try listening to it when you turn the ignition housing instead of watching a light. You´ll be surprised what difference that makes!

[wil8115]

actually it does sound lean just before redline, listen carefully. Do you have the A/F graph showing its fine?. something doesn't sound right at the top end.