Edelbrock jetting for altitude

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Edelbrock jetting for altitude

Post  carlgustav on Sun Feb 19, 2017 7:18 pm

Hi,

Sorry if this is here already somewhere, I did look a bit. Found general info about jetting carbs for the BRP, but I'm wondering if anyone with an Edelbrock Quicksilver has info on what jets work with this carb for an altitude range of around 7000 - 12000+ ft?

TIA,
ACE
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carlgustav
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Re: Edelbrock jetting for altitude

Post  BuRP on Mon Feb 20, 2017 6:42 am

Lol Ace,

and here's me thinking that that carb is set by screwing screws?
In any case, you better get a new carb (std/OEM or the TM40) as there's no spares for them for sale for eons already, they're discontinued.
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Re: Edelbrock jetting for altitude

Post  carlgustav on Mon Feb 20, 2017 4:33 pm

Well dog-gone-it, the bike came with this carb which is still in great shape, and has worked well on the street and the track for the past few years. And I'm a bit of a contrarian and prone to going against generally accepted advice Very Happy, not real bright, I know.

So, I have looked around and noticed a distinct lack of ... pretty much everything for these old carbs. OTOH, some have said they are very easy to adjust for altitude (discovered after question posted) by simply moving the needle up or down a few clicks. This assumes the needle is a decent compromise size (17, 18, 19 ... something).

I guess the smart thing (and $$) to do is to move to another carb. I've seen so many arguments regarding stock vs TM40 vs FCR41, that I really don't have a handle on which way to go ...

Thx,
ACE
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carlgustav
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Re: Edelbrock jetting for altitude

Post  BuRP on Tue Feb 21, 2017 10:45 am

carlgustav wrote: TM40 vs FCR41

You Bru,

it's your bike, so do as you please BRP smile
Regarding which one's best... best?
Best for what?
For real SM-racing yeah, the FCR wins it.
For everyday zero-maintenance use in remote areas where reliability counts most the TM can't be beat, and performance-wise there's not much in it.
Then we get to jetting, and here the VERY clear winner is the TM40: info galore for this carb whilst you'll struggle to find mere bits for the FCR - actually FCR's, there's quite a few of them.

Hey, if you're a carb-fundi go for it, just know you'll have to do everything on your own!
I know carbs well and choose the TM40, simply because it does everything I want whilst being stupidly-simple in every respect. Oh, it uses less fuel than with the std carb, quite a bit actually, you knew?
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