Questions about getting my block bored
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Questions about getting my block bored
Since there are no high performance pistons available for our car's, I've noticed that a few people have had their engines de-stroked to 1.6L so that they can use commonly available b/d16 pistons. So I'm thinking about going the other route and having mine bored to 1.8L so that I can use aftermarket b18 pistons.
Im going to have my stock connecting rods shot peened since there are no replacements at this time. My proplem is that I dont know if the b18 pistons will attach to my stock rods.
Also, whats a good compression to run on a N/A engine that will see a 50-75 shot every now and then? I was thinking 10.5 to1 , or maybe even 11 to 1.
Im going to have my stock connecting rods shot peened since there are no replacements at this time. My proplem is that I dont know if the b18 pistons will attach to my stock rods.
Also, whats a good compression to run on a N/A engine that will see a 50-75 shot every now and then? I was thinking 10.5 to1 , or maybe even 11 to 1.
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Rep Power: 0 Sounds like it would work but a bit unsure S2000man will likely have all the info on this cuz he seemed to know everything about it when blackvtec99 was going through it.
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[hr]Originally posted by: born2xLr8
I have no clue what this whole process is but it sounds intriguing.[hr]
[hr]Originally posted by: born2xLr8
I have no clue what this whole process is but it sounds intriguing.[hr]
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B18 Pistons are 81 mm. Ours are 75. I guess it's doable, but our engines have a longer stroke (87.2 vs. 94.4) So you would be pushing the displacement considerably higher than a B18. youd be looking at about 1.95L unless you changed the rods too.
It would be a ton of work to do it and do it right, and I'm not sure how much space there is between the cylinder bores... you want to make sure there is still suffecient material left after you're done.
It would be a ton of work to do it and do it right, and I'm not sure how much space there is between the cylinder bores... you want to make sure there is still suffecient material left after you're done.
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Rep Power: 424 I don't know. I don't know the exact geometry of the engine internals. It would depend on the rod length and the hight of the piston head.
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I've contacted Pruven Performance here in my town to see what they have to say about it.
EDIT: I'll post email when i get it.
EDIT: I'll post email when i get it.
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[hr]Originally posted by: PESTLNC
Last I heard (haven't seen)...our pistons are oval shaped. If true, that'll make boring it out a bit harder.[hr]
[hr]Originally posted by: PESTLNC
Last I heard (haven't seen)...our pistons are oval shaped. If true, that'll make boring it out a bit harder.[hr]
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[hr]Originally posted by: CivicRookie
That's exactly what I was thinking. Would there still be some way of making the pistons fit? With enough boring? And what about destroking to a 1.6? There are just too many questions...[hr]
[hr]Originally posted by: CivicRookie
Quote
[hr]Originally posted by: PESTLNC
Last I heard (haven't seen)...our pistons are oval shaped. If true, that'll make boring it out a bit harder.[hr]
[hr]Originally posted by: PESTLNC
Last I heard (haven't seen)...our pistons are oval shaped. If true, that'll make boring it out a bit harder.[hr]
Darton makes a set for the B18 that are supposed to have a built in block guard, but they cost $599+.
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From: Washington DC
Rep Power: 424 I'm calling BS on OVAL PISTONS.
I just ran the numbers
Displacement=
[(Bore/2)^2*pi]*Stroke *Cylinders
1000
In other words
[(75/2)^2*3.14.......] * 94.4 *4
1000
that equals 1668.18 cc
The EXACT displacement of our engines according to Honda. The pistons are round.
They may have domed or dished tops, but they have circular cross sections.
I just ran the numbers
Displacement=
[(Bore/2)^2*pi]*Stroke *Cylinders
1000
In other words
[(75/2)^2*3.14.......] * 94.4 *4
1000
that equals 1668.18 cc
The EXACT displacement of our engines according to Honda. The pistons are round.
They may have domed or dished tops, but they have circular cross sections.
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Rep Power: 330 Hmmm, It looks like both the B16 and B18 both have a bore of 81 MM. The B18 however has a longer stroke, so would that mean the the B18 pistons are still the best candidate? Or should I start looking at B16 pistons?
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