i stumbled onto this article, was wondering what people's feedback was?
Probably the most interesting point i read was about "block grouting"
"Next important stage is grouting the block. You need to buy some grout, i found 'Hard Blok' is the best value for money. Clean and flush the block thoroughly. Take out the welch plugs and fill the block up to the bottom of the welch plug holes, preferably tilt the enginge one way a little so the grout goes up the bores a little. To do this you have to do one side at a time, and let dry in between. This process stops bore shudder that cracks the blocks at 6500 revs plus, which is a common problem in a Clevo. It doesn't seem to effect cooling, especially if you have a 3 core radiator."
block grouting is a wank in a proper street motor. I can't think of any reason I would bother unless you wanted to run 8000 rpm in traffic light drags to and from work every day.
I have never heard of block shudder .. not saying it doesn't exist but if it was as common as it is supposed to be I am sure I would have heard about it by now.
Not recomended for a Street Engine, causes over heating problems.
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My Bros motor has been grouted.
No problem at all with the cooling , but he does run a custom 3 core radiator.
The only downside to this process is the additional weight over standard block with no grout.
You are all however quite right about it being useless in normal street application. There is no benefit in doing this to a 6000 - 6500 RPM street driven motor.
The grout was designed to stabilise the bores at extreme REVS and HORSEPOWER. My Bros engine runs a legitimate 270 - 280 rear wheel kilowatts and has HEAPS of torque. Remember that Clevos aren't exactly very thick around the bores , so this process can help to retain structural integrity if you have an extreme application in mind.
The grout is designed to keep the bottom part of the bores rigid. ( The area where the piston never fills). It is this " hollow" area where the problems are supposedly at their greatest in extreme applications.
But then again , if DJ never used it, who knows !!!!!!!
Does anyone know if his Greens Tuf used a standard Clevo Block or was it a NASACAR or Ford Motorsport Block ?????? This may answer that question.
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