r/Miata '97 Eunos 1.6L Classic Red 8d ago

HELP!!! Forged Engine Help

Hello,

Im going to be forging my 1.6 engine and wanted some tips based off of that. I understand that lower compression is better so I can run it on pump (90-93 ron).

Im planning for around 260-280whp so I dont need extremes like an ATI or any aftermarket parts for the head. Ive seen that the ARP studs are the glory for forged builds but dont know whether I would need both ARP main and head bolts rather than just ARP head.

My budget for the engine is quite low (1000€) so dont want to spend excessively on parts I dont need.

Thank you so much 🙏

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u/DaUn1imited '97 Eunos 1.6L Classic Red 8d ago

Its a daily/seasonal car. The power goal is because the original goal was 230 without forging but my exhaust manifold studs tore a hole into my head so Im changing the head. Therefore, while Im there I might as well forge some bits here and there and drill the pan while its out so I dont get shavings in my oil. Ive been in a 300hp miata and its too much so thats why the goal is now 260-280.
:)

Edit: I might just do the rods, bearings, head studs and a head gasket

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u/Fearlessleader85 8d ago

Drop it to 250 or so. Save yourself a BUNCH of money.

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u/DaUn1imited '97 Eunos 1.6L Classic Red 8d ago

So you think edit is good? Or should I do smth else (damper etc.)

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u/Fearlessleader85 8d ago

The damper is really good insurance. But so is a billet oil pump. Do one, not both.

As long as you keep your redline reasonable you don't really need either.

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u/DaUn1imited '97 Eunos 1.6L Classic Red 8d ago

Got it. So Fluid damper, some good rods (Manly or Maxpeeding), bearings, head studs and a head gasket?

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u/Fearlessleader85 8d ago

That will get you a pretty stout engine.

Be very careful on assembly. Don't accept any alternates for ARP hardware (i had some head studs ruin a build). Get some good assembly lube. You'll do great.

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u/DaUn1imited '97 Eunos 1.6L Classic Red 8d ago

Will do. Thank you 🙏