Bridgeport option
#21
Originally Posted by Rob x-7' date='April 19 2002,15:46
MazdaTrix claims that porting isnt a big power gain to do to a engine, but if its out and being rebuilt, then it doesnt hurt, for N/A, has anyone done any dyno tuning to see what power gains can be had by porting alone versus no porting on a N/A? Ive always been curious to find out? They do Bridgeporting to outboard boat engines, and its called that because of the machine its done on, a Bridgeport machine can pretty much do any machine work when set-up properly, especially porting and milling and what not.
#22
So the stock computer would not work so well with the Bridgeport? I had heard that it caused a rough idle and remember reading somewhere that it was for "track only" cars. Do you think the n/a drivetrain would be up to it? Mine has 102,000 so I'm betting that my engine will be in decent shape when I open it up. Hoping anyways. If the Bridgeport is just too much, I will pay the 300 for the streetport and polish and put the rest into the exhaust. Thanks
#23
Originally Posted by isamu' date='April 19 2002,22:46
So the stock computer would not work so well with the Bridgeport? I had heard that it caused a rough idle and remember reading somewhere that it was for "track only" cars. Do you think the n/a drivetrain would be up to it? Mine has 102,000 so I'm betting that my engine will be in decent shape when I open it up. Hoping anyways. If the Bridgeport is just too much, I will pay the 300 for the streetport and polish and put the rest into the exhaust. Thanks
I'll see then if I'm very far from what it is supposed to give.
#24
Originally Posted by isamu' date='April 20 2002,01:46
So the stock computer would not work so well with the Bridgeport? I had heard that it caused a rough idle and remember reading somewhere that it was for "track only" cars. Do you think the n/a drivetrain would be up to it? Mine has 102,000 so I'm betting that my engine will be in decent shape when I open it up. Hoping anyways. If the Bridgeport is just too much, I will pay the 300 for the streetport and polish and put the rest into the exhaust. Thanks
#26
Originally Posted by Rob x-7' date='April 19 2002,15:46
MazdaTrix claims that porting isnt a big power gain to do to a engine, but if its out and being rebuilt, then it doesnt hurt, for N/A, has anyone done any dyno tuning to see what power gains can be had by porting alone versus no porting on a N/A?
And I quote : "By the same token, do not expect substantial gains in power from "street porting" these engines - it's a worthwhile addition IF the engine is going to be apart anyway, but definitely not worth taking a running engine apart just to street port it."
This comes from 86-95 Turbo Street Porting at MazdaTrix.
So what's the truth? ???
#28
Originally Posted by isamu' date='April 20 2002,10:06
I can not remember where, but the figure I saw for street porting was around a 22% gain on stock horsepower. So I suppose you would gain about 30hp on a 146hp engine.
What year is your car, is it a '86 like mine?
#29
Originally Posted by Powerpack' date='April 20 2002,10:21
[quote name='isamu' date='April 20 2002,10:06']I can not remember where, but the figure I saw for street porting was around a 22% gain on stock horsepower. So I suppose you would gain about 30hp on a 146hp engine.
What year is your car, is it a '86 like mine?[/quote]
:newlaugh: :newlaugh: :newlaugh:
U'd be willing to spend $ 800 and remove your engine and put it back in for 10hp. thats some funny stuff.
#30
Originally Posted by Powerpack' date='April 18 2002,18:38
vosko, that's a pretty good one. How much HPs can you get this porting? Do you need to upgrade the fuel system to get good results?