3 replies to this topic

[1380gtr]

Hi there,

I'm calling to get some help for the jetting of my cars freshly fitted with Seven port and webers 45

The spec of the engine :

1380 - race seven port head - 649 cam - 1.5 rollers- 123 dizzy - 3-1 exhaust

The jettings are :

Chokes 36
Mains 160
Air 170
idle 55
pumps 45 or 40

The power with that spec is good at the top end but the car doesn't go well at middle end and begins to go at 4.5k but ok till 8200.
Also the spark plugs are a little white.

If anyone can give me advice on what to do to get something going ok in the lower revs and even if possible what they are using as jettings for their cars because minisport didn't help me with the correct settings


Thanks a lot

[fikus01]

has she been setup on a rolling road?

[1380gtr]

has she been setup on a rolling road?

no I Went to a racetrack to set it up... it rides fine but it is not perfect

so if anyboby can give me ways to go

[Sprocket]

Three words

Rolling Road Tuning.



Youll be lucky to find many that have the seven port. One thing the seven port head does is open up the possability of sequential fuel injection.