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hey all i was wounderin if miata pistons would be better for the 1.6 dohc as compression wise or not or if its just a better piston all around. thanks guys.

well stock for stock they are exactly the same in the 1.6L. but if you were going to run a BP then steping up to a 99-02 miata piston would be ideal because the compression is higher, 10:1 vs 9:1. but as far as the 1.6L goes all the inturnals are the same except the cams

so putting miata pistons in wont be better than the ones i already have? Also i have to stay with the 1.6 cause im out here in cali and i dont want to go through the crap to get it legal with the bp. And in ur guys opinion should i put all miata parts in it or no? or what do u guys suggest to do. Im not lookin for major power increase on this motor cause i have a type s rsx that im doin up i just want this car to be a little more fun to drive.

wiseco sells 3 different pistons for the 1.6 B6 and 3 low + 2 high compression for the BP... they're all like 800 bucks though..

Want power..boost it... low boost like 10 psi... build a CHEAP a-- turbo kit with a New turbo...
Get a miata 1.6L turbo manifold and have the engine-side flange cut off,rotated 180 degrees and TIG'd back on..You're basically done.. buy and build from there...

I've observed that:
Overboring and not stroking = more low end torque gains
Stroking and not overboring = higher hp less or same torque
Doing both (and re-tuning) = the curves mostly look the same just higher on the graph..

Miata 1.6 Ltr.
Kit Part # | Bore MM | Over Sizes MM | Stroke MM | Comp Ratio | Grams-Piston | Installed displacement

K554M785 | 78.50mm | 0.50mm | 83.5mm | 8.5:1 | 257g | 1617.16cc
K554M79--| 79.00mm | 1.00mm | 83.5mm | 8.5:1 | 284g | 1637.83cc
K554M795 | 79.50mm | 1.50mm | 83.5mm | 8.5:1 | 292g | 1658.63cc


Miata 1.8 Ltr. and Protégé 1.8 ”BP”
K553M835 | 83.50mm | 0.50mm | 85mm | 8.6 - 9.0:1 | 301g | 1862.60cc
K553M84--| 84.00mm | 1.00mm | 85mm | 8.6 - 9.0:1 | 309g | 1884.97cc
K553M845 | 84.50mm | 1.50mm | 85mm | 8.6 - 9.0:1 | 315g | 1907.48cc
**Same motor but high compression pistons
K590M835 | 83.50mm | 0.50mm | 85mm | 10.3 - 10.9:1 | 288g | 1862.60cc
K590M84--| 84.00mm | 1.00mm | 85mm | 10.3 - 10.9:1 | 293g | 1884.97cc

Cy wrote:wiseco sells 3 different pistons for the 1.6 B6 and 3 low + 2 high compression for the BP... they're all like 800 bucks though..

Want power..boost it... low boost like 10 psi... build a CHEAP a-- turbo kit with a New turbo...
Get a miata 1.6L turbo manifold and have the engine-side flange cut off,rotated 180 degrees and TIG'd back on..You're basically done.. buy and build from there...

I've observed that:
Overboring and not stroking = more low end torque gains
Stroking and not overboring = higher hp less or same torque
Doing both (and re-tuning) = the curves mostly look the same just higher on the graph..

Miata 1.6 Ltr.
Kit Part # | Bore MM | Over Sizes MM | Stroke MM | Comp Ratio | Grams-Piston | Installed displacement

K554M785 | 78.50mm | 0.50mm | 83.5mm | 8.5:1 | 257g | 1617.16cc
K554M79--| 79.00mm | 1.00mm | 83.5mm | 8.5:1 | 284g | 1637.83cc
K554M795 | 79.50mm | 1.50mm | 83.5mm | 8.5:1 | 292g | 1658.63cc


Miata 1.8 Ltr. and Protégé 1.8 ”BP”
K553M835 | 83.50mm | 0.50mm | 85mm | 8.6 - 9.0:1 | 301g | 1862.60cc
K553M84--| 84.00mm | 1.00mm | 85mm | 8.6 - 9.0:1 | 309g | 1884.97cc
K553M845 | 84.50mm | 1.50mm | 85mm | 8.6 - 9.0:1 | 315g | 1907.48cc
**Same motor but high compression pistons
K590M835 | 83.50mm | 0.50mm | 85mm | 10.3 - 10.9:1 | 288g | 1862.60cc
K590M84--| 84.00mm | 1.00mm | 85mm | 10.3 - 10.9:1 | 293g | 1884.97cc

there are alot more sizes available for the B6 than what you have shown. they may just not be listed.

if you dont want a major power increase then just swap in a 1.8L BP, 125hp to the crank, cant beet that over 105hp to the crank or 88 for the sohc. if you can find a 99-02 miata engine it can go in and it puts down about 140. its all pretty straight forward. and shouldent kill your CA emissions, you shouldent have a problem.

Josh wrote:

Cy wrote:wiseco sells 3 different pistons for the 1.6 B6 and 3 low + 2 high compression for the BP... they're all like 800 bucks though..

Want power..boost it... low boost like 10 psi... build a CHEAP a-- turbo kit with a New turbo...
Get a miata 1.6L turbo manifold and have the engine-side flange cut off,rotated 180 degrees and TIG'd back on..You're basically done.. buy and build from there...

I've observed that:
Overboring and not stroking = more low end torque gains
Stroking and not overboring = higher hp less or same torque
Doing both (and re-tuning) = the curves mostly look the same just higher on the graph..

Miata 1.6 Ltr.
Kit Part # | Bore MM | Over Sizes MM | Stroke MM | Comp Ratio | Grams-Piston | Installed displacement

K554M785 | 78.50mm | 0.50mm | 83.5mm | 8.5:1 | 257g | 1617.16cc
K554M79--| 79.00mm | 1.00mm | 83.5mm | 8.5:1 | 284g | 1637.83cc
K554M795 | 79.50mm | 1.50mm | 83.5mm | 8.5:1 | 292g | 1658.63cc


Miata 1.8 Ltr. and Protégé 1.8 ”BP”
K553M835 | 83.50mm | 0.50mm | 85mm | 8.6 - 9.0:1 | 301g | 1862.60cc
K553M84--| 84.00mm | 1.00mm | 85mm | 8.6 - 9.0:1 | 309g | 1884.97cc
K553M845 | 84.50mm | 1.50mm | 85mm | 8.6 - 9.0:1 | 315g | 1907.48cc
**Same motor but high compression pistons
K590M835 | 83.50mm | 0.50mm | 85mm | 10.3 - 10.9:1 | 288g | 1862.60cc
K590M84--| 84.00mm | 1.00mm | 85mm | 10.3 - 10.9:1 | 293g | 1884.97cc

there are alot more sizes available for the B6 than what you have shown. they may just not be listed.

if you dont want a major power increase then just swap in a 1.8L BP, 125hp to the crank, cant beet that over 105hp to the crank or 88 for the sohc. if you can find a 99-02 miata engine it can go in and it puts down about 140. its all pretty straight forward. and shouldent kill your CA emissions, you shouldent have a problem.

I have a set of weisco forged 9:1 pistons in my engine currently. Think they are 1mm overbore.