01 Build. Would you add?
#1
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Thanks for all your input in my other thread about differences in building 1.6 vs 1.8. Ultimately i decided that if i was going to build a motor, why not do it right and start off with a better platform.
Goals are still the same
300 rwhp +/-
Track first/street second
Now this is what i have so far (or coming )
01 motor with 22k miles ready for forged guts
M-Tuned rods
9:1 supertechs 84mm
And thats it.
Obviously im going to need
A rebuild kit
Coolant reroute
COPs?
Machinist
Lots of time learning
Please feel free to voice something i missed or a part that i have not seen.
Remember this isnt a car build just a engine. I dont wanna see, "what you gonna do with all that power, your gonna need brakes suspension neon lights bla bla bla." Your gonna get kicked in the nuts if you do.
Will i need?
bearings, main studs, head studs, oil scrapper, billet oil pump gear?
I will be tracking this motor and want it to last me many years
Goals are still the same
300 rwhp +/-
Track first/street second
Now this is what i have so far (or coming )
01 motor with 22k miles ready for forged guts
M-Tuned rods
9:1 supertechs 84mm
And thats it.
Obviously im going to need
A rebuild kit
Coolant reroute
COPs?
Machinist
Lots of time learning
Please feel free to voice something i missed or a part that i have not seen.
Remember this isnt a car build just a engine. I dont wanna see, "what you gonna do with all that power, your gonna need brakes suspension neon lights bla bla bla." Your gonna get kicked in the nuts if you do.
Will i need?
bearings, main studs, head studs, oil scrapper, billet oil pump gear?
I will be tracking this motor and want it to last me many years
#2
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Thanks for all your input in my other thread about differences in building 1.6 vs 1.8. Ultimately i decided that if i was going to build a motor, why not do it right and start off with a better platform.
Goals are still the same
300 rwhp +/-
Track first/street second
Now this is what i have so far (or coming )
01 motor with 22k miles ready for forged guts
M-Tuned rods
9:1 supertechs 84mm
And thats it.
Goals are still the same
300 rwhp +/-
Track first/street second
Now this is what i have so far (or coming )
01 motor with 22k miles ready for forged guts
M-Tuned rods
9:1 supertechs 84mm
And thats it.
Obviously im going to need
A rebuild kit
Coolant reroute
COPs?
Machinist
Lots of time learning
A rebuild kit
Coolant reroute
COPs?
Machinist
Lots of time learning
![wink](https://www.miataturbo.net/images/smilies/wink.gif)
bearings, main studs, head studs, oil scrapper, billet oil pump gear?
I will be tracking this motor and want it to last me many years
I will be tracking this motor and want it to last me many years
I re-used the stock main bolts - anything else is totally overkill for 300whp.
You are supposed to be able to use the stock head bolts again, but my HG leaked when I did that so take that as you will. I ended up with ARP studs and I have no regrets - there's no downside other than cost, and the motor is quite a bit easier to assemble (and they are reusable).
Oil scraper might not be a bad idea, I didn't do one and I don't lose sleep over it.
I mentioned oil pump gears earlier.
You can spend a lot of money on a motor, or you can spend very little - it all depends on how far down the "slippery slope" you go. I have $1700 into my shortblock:
-$200 machining
-$800 pistons/rods
-$150 oil pump gears
-$250 seals/gaskets/TB/WP/etc
-$90 bearings
-$110 ARP studs
-$100 in small **** like oil, filters, etc.
#3
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Just took a look at the supertech list and they dont make a 8.7 low comp pistons; just 8.6. I dont want to have a sluggish off boost car thats why i was thinking 9:1. Ill talk to adam when i call him and see if theres a happy median. Thanks sav
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You can also look at my dyno that shows 252wtq at 4k rpm, which is a DD that reads 12% lower than a dynojet...I also fixed some exhaust restriction and it got faster. So basically thanks to the low comp, I'm hitting MBT in the max torque cells at 4k rpm, at 15psi and running safely at 22* advance. I've had it up to 26* with no detonation. That's a lot of headroom and pizza-mind.
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It's funny... I personally like 9.5:1 compression pistons on my 250-350hp Miata builds.
Anything above 350hp I use 8.8:1 normally. I always found the 9.5:1 to be a little better off boost and with spool-up than the 8.8:1 pistons.
I know when we build boosted Honda engines we use 9.5:1 or 10:1 with zero issues and we normally make 500hp+ on them. My last B18C Honda Engine was 10:1 and I was making over 600hp with it.
I do agree with the comment about track first (Go low Compression) or street (Do the higher).
Just my 2 cents....
Anything above 350hp I use 8.8:1 normally. I always found the 9.5:1 to be a little better off boost and with spool-up than the 8.8:1 pistons.
I know when we build boosted Honda engines we use 9.5:1 or 10:1 with zero issues and we normally make 500hp+ on them. My last B18C Honda Engine was 10:1 and I was making over 600hp with it.
I do agree with the comment about track first (Go low Compression) or street (Do the higher).
Just my 2 cents....
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It's funny... I personally like 9.5:1 compression pistons on my 250-350hp Miata builds.
Anything above 350hp I use 8.8:1 normally. I always found the 9.5:1 to be a little better off boost and with spool-up than the 8.8:1 pistons.
I know when we build boosted Honda engines we use 9.5:1 or 10:1 with zero issues and we normally make 500hp+ on them. My last B18C Honda Engine was 10:1 and I was making over 600hp with it.
I do agree with the comment about track first (Go low Compression) or street (Do the higher).
Just my 2 cents....
Anything above 350hp I use 8.8:1 normally. I always found the 9.5:1 to be a little better off boost and with spool-up than the 8.8:1 pistons.
I know when we build boosted Honda engines we use 9.5:1 or 10:1 with zero issues and we normally make 500hp+ on them. My last B18C Honda Engine was 10:1 and I was making over 600hp with it.
I do agree with the comment about track first (Go low Compression) or street (Do the higher).
Just my 2 cents....
#12
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I do plan on tracking the car but also like street driving. Also i called Adam and supertech doesnt make the 8.6's anymore. And the Weisco's were out of stock with no set date of the new arrivals. Everyone in the group buy ordered the 9:1 so cant be too bad
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CR have a set of brand new Wiseco Pistons - 8.5:1 compression, 84mm with rings for sale for $415 shipped if you don't want to run 9:1. I think most of us were try to get 8:6:1 from Supertech which is no longer in production.
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