Mazdaspeed Grose-Jets, Nikki
I'm looking at my 97' Mazdaspeed Competition Parts Catalog and Noticed that Mazdaspeed use to sell/make race/upgraded Grose-Jets(Needle and Seats) for the 12A Nikki.
Page IN-3 (Intake and Exhaust Section) Part # 0000-06-7311 Fits 72-85, 'Replaces stock carburetor needle and seat. Provides consistent fuel metering and fuel flow under all conditions, even with high "G" cornering loads.' Does anyone have any of these? Or know if they still sell them? Thanks, -Crispin |
there was a tread about this last week, they haven't been available thru mazda since something like 2004
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also, unless you have modified ignition components, some mild porting, and perhaps a performance exhaust, these could easially flood the engine. more fuel on a stock engine is a bad idea any way you look at it..
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Originally Posted by mazdaverx713b
(Post 10488332)
also, unless you have modified ignition components, some mild porting, and perhaps a performance exhaust, these could easially flood the engine. more fuel on a stock engine is a bad idea any way you look at it..
That sucks that they don't make them anymore.. I didn't see the thread that someone posted. :scratch: |
The grose jets aren't necessarily made to flow more fuel. Their purpose is to replace the unreliable needle and seat setup found in most carburetors. The needle and seat setup is very prone to sticking as many of you know. When this happens the result is a flooded carb. The grose jet uses two ball bearings, so you never have the issue of them hanging up and flooding the carb. It is more of a reliability modification, than a performance increase. You wouldn't gain any additional performance from them. Just a more reliable setup.
They are also better in race applications where you will see rough driving conditions that could disturb the delicate needle/seat setup. |
Originally Posted by mazdaverx713b
(Post 10488332)
also, unless you have modified ignition components, some mild porting, and perhaps a performance exhaust, these could easially flood the engine. more fuel on a stock engine is a bad idea any way you look at it..
Edit: damnit somebody beat me to it |
Originally Posted by Glazedham42
(Post 10488389)
The grose jets aren't necessarily made to flow more fuel. Their purpose is to replace the unreliable needle and seat setup found in most carburetors. The needle and seat setup is very prone to sticking as many of you know. When this happens the result is a flooded carb. The grose jet uses two ball bearings, so you never have the issue of them hanging up and flooding the carb. It is more of a reliability modification, than a performance increase. You wouldn't gain any additional performance from them. Just a more reliable setup.
They are also better in race applications where you will see rough driving conditions that could disturb the delicate needle/seat setup. I think I may have found someone who has them, I posted this same thread in the 'Old School' section and, someone simply replied: 'I have them in stock.' |
my fault, i read it wrong. i t was early in the morning and i hadn't gone to bed yet. thanks for adding the correction guys!
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Grose Jets also fill up the float bowl *faster* and they don't spray fuel which causes foaming like a needle & seat does.
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