11 replies to this topic

[IainNeon91]

I will soon be swapping my HS4 for a HIf38, do i need different choke and throttle cables?

Many Thanks
Iain.

[jaydee]

Choke is the same.
Throttle-butterfly connection should be the same used on the HIF44 iirc, so you need a metro type cable

[jaydee]

http://www.minispare...r/SBB10099.aspx

This is the correct one according to minispares.
(Althou mine is off a metro and its the same as this one, they advertise the metro cable as different quickly recognisable by a red plastic connection.)

[IainNeon91]

Does it matter that this is a '1275' cable and i have a 998? I shouldn't think it matters, but i'd better ask. Ok, thank you jaydee. I shall invest in one of those.

Edited by IainNeon91, 21 January 2013 - 12:06 PM.

[jaydee]

Theres no actual thing as a 1275 or a 998 throttle cable.
Its just that no 998 came out the factory with an HIF carb fitted :)

[Vipernoir]

If you're handy with a pillar drill and have an old 5/16" bolt lying around you can quickly and easily make an adaptor for the non-HIF cable.

Just drill a stepped hole through the middle of it.

[lrostoke]

Is there anything actually wrong with your HS4, theres no massive benefit to swapping, I believe the major benefit is cornering on tracks, HIF doesn't starve fuel like the HS.
Other than that the HIF38 is just a metric version of the HS4 both 1.5" (38mm) ,same jets and needles (sizes that is)

Edited by lrostoke, 21 January 2013 - 06:20 PM.

[IainNeon91]

Is there anything actually wrong with your HS4, theres no massive benefit to swapping, I believe the major benefit is cornering on tracks, HIF doesn't starve fuel like the HS.
Other than that the HIF38 is just a metric version of the HS4 both 1.5" (38mm) ,same jets and needles (sizes that is)

David Vizard told me too...

Edited by IainNeon91, 22 January 2013 - 10:20 AM.

[lrostoke]

If you google mini hs4 hif38, a few topics pop up that have been on here, a lot say the same, no massive benefit if the HS4 is working and in good nick.

I'd be suprised if you noticed the difference once fitted...unless your comparing a HS4 thats worn out to a HIF38 in good nick, then you may notice

[IainNeon91]

If you google mini hs4 hif38, a few topics pop up that have been on here, a lot say the same, no massive benefit if the HS4 is working and in good nick.

I'd be suprised if you noticed the difference once fitted...unless your comparing a HS4 thats worn out to a HIF38 in good nick, then you may notice

I am having a few problems with my HS4, yes. Also i have read that the HIF38 is a lot easier to work with, what without all that separate Jet and components connecting them together, plus i have read that they do actually have significant performance figures at the rolling road, which i am doing in March so i just thought i get one for then.

[Vipernoir]

An HIF is easier to live with overall.
However, instead of the beloved Waxstat it does have a bimetallic strip inside to do the same job of leaning out the mixture, which can interfere with setting the mixture accurately. Get rid of the strip and it's perfect.

[IainNeon91]

An HIF is easier to live with overall.
However, instead of the beloved Waxstat it does have a bimetallic strip inside to do the same job of leaning out the mixture, which can interfere with setting the mixture accurately. Get rid of the strip and it's perfect.

I shall investigate when it arrives!