H1 Slow past 110mph tops out at 120 ?!???

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Cjamster
Posts: 1
Joined: Mon Jul 01, 2013 6:35 pm
My Bike: Zxr400 h1 1989
Location: West Sussex

H1 Slow past 110mph tops out at 120 ?!???

Post by Cjamster »

Having an annoying problem my zxr 400 h1 is great apart from she feels slightly less powerful than my h2
H1 very slow past 110 and the highest I got on a very looong straight was 120
And the h2 flew past 120 no problem :smt004 any ideas guys thanks

Note:
Both have aftermarket end cans and stock downpipes no other power modifications
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CaNsA
zxr400 oc member
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Joined: Sat Nov 29, 2008 4:02 pm
My Bike: ZX6R F1
Location: Liverpool

Re: H1 Slow past 110mph tops out at 120 ?!???

Post by CaNsA »

Running lean.

Tape up 1/3 of the air intake snorkel and try again.
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banner001
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Posts: 2584
Joined: Sat Sep 24, 2011 3:27 pm
My Bike: ZXR400 L4
Location: Nuneaton

Re: H1 Slow past 110mph tops out at 120 ?!???

Post by banner001 »

or fit bigger mains to compensate at WOT
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said :smt003
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