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[emoji23][emoji23][emoji23] it’s funny because I started noticing a few pops and bangs on over run occasionally and it never used too, ironic really as that’s what pops and bangs mapping could potentially do to people’s exhaust valves!
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No worries, it’s lower compression. The volume of the dish on the top of the Megane piston is about 11.60cc and the standard is basically zero.. pictures are deceiving! [emoji106][emoji106]
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A few pics of how a Megane 3RS piston compares to a standard Clio 182 piston, the Megane piston was my test piston for exhaust pockets. You can see how much more of a quality piston they are now compared to 182 or Megane 2RS. The Megane 3RS piston weigh approx 30g more too..
Have been driving...
Booked for the 6th of July, just need to Group N time a mates Clio and fit a new full Exhaust system on a 265 megane who are also coming on the same day for mapping
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http://www.slidemotorsport.co.uk/product/t2-copper-gasket-t25-t2-turbo-to-manifold-ca18det-sr20det/
Here you go mate, with the upper brace I have made up its sorted the issue of the two top studs coming loose but the surfaces - even though they were machined flat have a tendency to warp...
New water pump, keyed megane lower cam gear.. head fitted with new supertech inconel valves, seats cut, head checked and cleaned.. new copper gasket on turbo to manifold.
original exhaust valves weren’t too good!
I’ll try and get it all back together tomorrow and hopefully fire it up...
It took a lot of planning to get things all together, lots a waiting too.
I did the hone in place, the pictures actually make it look quite rough but they are perfect and it was only very light!
Spring wise.. I’m using the standard springs but with the pure motorsport shims under the valve...
Yeah I was nearly in tears mate, when the head was off you can see how well it had been running, looked perfect.. the bearings etc were all like new [emoji30] as expected of a 70k mile engine!
But like like you say, peace of mind and I don’t have to worry about a valve dropping either!
Will be...
Head off, sump off, light cylinder home done..
Megane 3rs rods, pistons, new NE rings, ACL big end bearing and ARP rod bolts fitted
Head down to machine shop tomorrow to have inconel supertech valves cut in and head checked
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Cheers mate, I won’t be going crazy boost. The meg 2 RS pistons were more problematic than the Meg 3 RS pistons I’m using. I’m just about to start it all after compiling my parts, sourcing rings etc! A company called MAR MOTORSPORT were able to get my rings [emoji106]
And yes it has been...
Hi guys, been quiet on my build thread for a while... car is still going strong.
I’m about to embark on the next stage of my engine for this years Nür/spa trip.
List of goodies are,
Supertech inconel valves.
Megane 3RS pistons which have been pocketed on the exhaust side.
Megane 3RS rods with...
Hi guys does anyone have a UCH for a Clio 182, preferably virginised.. think mine is in the process of giving up! [emoji17]
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It seems as though bar and plate coolers suffer from heat soak a lot more than tube and fin type Intercoolers... I actually have a bar and plate now, Mishimoto are also bar and plate so not really keen.
Spoke to pro alloy about a custom one so will see
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Nice, yeah defo would prefer to keep the compression up.. maybe I’ll go somewhere in the middle! Don’t want things getting to hot
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I’ve got 3 very tidy ones and possibly have dibs on a set if they turn out to be in good condition, I’ll be aiming for around 9:1 so a 1.3mm gasket should get me there.. need to have the rods tapered at the end too as the megane 250 rods are.
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