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Home > Help Needed / General Tech Chat > hi lift rockers or not to hi lift rockers

masterchief

117 Posts
Member #: 7308
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Devon

hi all

basically i have a set of hi lift rockers its the 1.5 lift ones, the engine they are to go on is a stock 1275 with the 12g940 head on it, i have been told it will be the same effect as to fitting a 276 cam...is that right?.....to be honest i want about the same kinda grunt as my old 106 xsi as that was useable quick....how can i get that kinda power from this engine without going forced induction as i like the challenge.

let the slating commence lol

regards


EricsAmerica

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141 Posts
Member #: 7891
Advanced Member

Annapolis, MD USA

I found a big improvement with the 1.5's over the stock rockers, although I have a 1380 with 276 cam, weber carb, etc.... You should see improvement with them, just make sure that you have the proper high lift springs so that they do not bind at full lift. You may also need spacers under them to get the correct alignment/geometry depending on your head and block combination and if they have been worked/skimmed at all.

At a minimum though, you should have a decent flowing exhaust and carb setup first before messing with the rockers.

Eric
my pics.... http://www.fototime.com/inv/7AAF37CF3EFA956


Advantage

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1137 Posts
Member #: 1450
Post Whore

Near Paris - France

1,5 lift rockers wont be the same as fitting a 276 cam.
Unless you already have an MG Metro cam.

What is the weight of an XSi and what engine does it have ?
1,6 16v 120 bananas ?
In terms of power, you won't get that for cheap off a Mini engine but on a power to weight ratio, I guess you can have quite close to the 106 for not much.

Rusty by nature

On 23rd Jun, 2008 paul wiginton said:

They said "That sounds rough mate." I said "Cheers it cost me a fortune to make it sound like that!"


fab

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1497 Posts
Member #: 100
Parisien Turbo Expert

Paris\' suburb

xsi didn't have 1.6 16v, they had between years tu 8v firstly 1360 then 1600. 900 kg, 16s 1/4 mile for the later...
a well tuned 1310cc st3/4 with a road rally cam and twin's hs4 could match it but never a genuine engine with h/l ramp

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