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View Full Version : EVO4 tappets are hydraulic, is it true?!


sk_evo4
16-07-2001, 06:03
someone told me all EVO4 (and onwards) tappets are hydraulic, as such no adjustment is required unlike manual ones. is this true?!

chunky
16-07-2001, 06:26
All Mits engines of interest to us (4G63, 4G93) have hydraulic tappets and a reet bugger they are too!

Although according to accepted wisdom they don't <i>need</i> adjusted, they racket they can sometimes produce makes you wish you could. A good semi or fully-synthetic oil of 10w50 grade or similar (most folks have problems with the 'thinner' 0w40 grades) and a decent filter with a good anti-drain flap can cure them but it is a bit of a black art finding a good filter.

Lightspeed
16-07-2001, 08:28
Chunky's right - I hate them too!!!

Mitsubishi did improve the design at some stage - but I don't know when this affected evo engines. Anyone?

Chunky - did you see the co-ordsport sale list - 1800gsr tappets at approx 6 quid each.

chunky
16-07-2001, 16:23
Thanks for the heads-up Lightspeed [img]http://www.ltregister.f9.co.uk/graphics/happy1.gif border|EQU| 0 align|EQU| absmiddle ><!--e1-->

[Edited to say I can't find 'em!]

Lightspeed
16-07-2001, 17:41
Chunky,

MD376687 Adjuster Rocker Arm CD5A (A) 6.36 each

In July parts clearance excel spreadsheet.

All sorts of goodies going cheap. (55% off).

Got myself a sh*t load of stuff for the beast.

chunky
17-07-2001, 17:19
Hmm, downloaded that one but it has no mention of the parts you list. Maybe they are all gone [img]http://www.ltregister.f9.co.uk/graphics/sad1.gif border|EQU| 0 align|EQU| absmiddle ><!--e2-->

Academic anyway as I have many more things demanding my 120 than tappets! Especially considering the little blighters have actually been quieter since my last service than at any time since I bought the car. With me just approaching 5000m they have only recently started ticking very quietly occasionally, 1500 miles was about the most I could expect before!