Spoon stroker kit


does anyone ever do this set up but retain teh ek9 pistons? as then you woudl have higher compression or will this not work due to teh dimensions of teh rods etc i.e longer stroke rods push pistons up beyond bore?
 
it is possible to use the EK9 piston but the compression becomes very high. Without proper fueling and a remap you are risking a lot.

The EK9 piston is actually considered by many to be a rather poorly designed slug. It's domes are unnecessarily high which is not good for compression QUALITY and it is the heaviest Bseries VTEC piston.

I'm sure Honda had to compromise and the bean counters got in the way of the engineers. I'm certain they would have gone with an even longer rod and a flatter dome if possible.
 
when you say compression quality do you mean all teh force due to teh sloping top design is forced outwards to teh rings under compression whereas with a flatter top teh forces are retained more centrally on teh piston, would think it creates a funny burn pattern too,, mind you 185 hp froma 1.6 aint bad, but this is probably more to do with teh head and camshaft designs..

so you rate the integra piston over teh EK9 piston then?

if you were going to build a B18 would you go this route or just get a B18 C5 or C6 and drop the whole lot in from a low mileage integra?
 
You are most correct with how the sloping dome forces the combustion outwards instead of centrally.

I think 185bhp is fantastic! BUT! There's always room for improvement...which is what K-TECH did. I believe they are using an EK9 length rod (but forged) and a special custom piston for the 18C stroker.

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If it was my money and I knew I was going to keep this car for a long time (forever and a day!) then I would just rebuild the motor properly with brand new parts/machine work. If you see yourself keeping it less than 5 years, go for the low mileage swap instead.

There are never any guarantees that low mileage = good quality...so caveat emptor!!
 
yeah i know what you mean,,
an engine may be low mileage but not had teh oil changed frequently etc etc it may be a ropey old dog!!

no plans for mine as yet but certainly intend on keeping it a while i had my mk1 golf gti for 9 years!!

that k tech piston looks nice and light!! :)
take it with that kit you just need to get hold of a b18 type r crank and you are away with a bit of machining..

only thing that concerns me with machining is that a man in a workshop with his boring kit etc etc possibly cannot replicate teh accuracy that honda can with their ££££££ gear designed specifically for building each type of engine.........
 
well taking a page out of Spoon's president's recommendation and installing close gears might keep your appetite whetted for a while.

Finding a competent machine shop will always be of prime concern. It will be necessary to ensure the machinist understands the honing specs and the crosshatch pattern that Honda has set.

And with the KTECH kit you must also run an 18C crank. Power is a great thing to have, but without proper delivery, it's useless....
 
RagingAngel said:
And with the KTECH kit you must also run an 18C crank. Power is a great thing to have, but without proper delivery, it's useless....
Click to expand...

That's right, I'm going to order this set from KTECH, but don't know how to do...:)
I sent my order and still no any reply from KTECH...
 
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