Sorry, if this is a late post on this...Bob, did you really mean 25% fuel
mileage lost by blocking the heat riser? 25%? So if I get 20 mpg and block
he riser I would only get 15 mpg? My sense on blocking the riser is to cool
the manifold which reduces the charge air temp a little bit. Drag guys now
regularly ice down their manifolds to get the densest air charge they can.
They may or may not use a cool can to cool the fuel...all this in an effort
to make more power and not economy of course.
----- Original Message -----
From: "Palmer, Robert L." <RPalmer@brobeck.com>
To: "'New Mexico Books'" <email@example.com>;
Sent: Tuesday, October 15, 2002 3:42 PM
Subject: RE: Fuel vapour, non tiger
> Does anyone have experience with the change in gas mileage by just
> the intake manifold heat riser? I wouldn't be surprised if blocking the
> riser dropped the fuel mileage by 25%. On the other hand, more heat isn't
> likely to improve mileage by 25%.
> My $0.02
And a good 2 cents worth it was! I wish we could all put our heads together
and find a solution that works for mileage and power before the fuel police
come around and kill our cars...
mayf, the red necked ignorant desert rat in Pahrump, and where the hell is