Originally Posted by ryansmoneypit
(Post 1479165)
then you want to put rods in a 1.6 and ARP hardware on a NON TURBO engine WITHOUT MEGASQUIRT 3.
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He's already turbocharged on the 1.6, Ryan.
IDK why he wouldn't build the 1.8 while still enjoying driving the 1.6 and then swap it in when he's finished putting it together. That way he can take it slow and not spend a bunch of money at once. |
crap. totally missed that. sorry op
EDIT: yep, i thought this was another thread, had a very similar build list. My apologies for interjecting without knowing. |
Finally I travelled 560 miles yesterday to pick up a BP engine:
http://fs1.directupload.net/images/180430/s72xgfsm.jpg So, you recommend opening a new Thread named "Recommendations for my forged rebuild of my BP engine" or shall we go on in this one? Because now I need some advices for the build of this engine. Thanks guys! |
Isn't the recommendation pretty much the same?
Just run with appropriate pistons to accomodate your new block. |
PLOT TWIST
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One thread is good enough.
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Originally Posted by psyber_0ptix
(Post 1479677)
Isn't the recommendation pretty much the same?
So what parts would you recommend to purchase? Manley rods should be ok. But what pistons? Wisecos or Supertech? Go for 85,5mm bore? 9,5 or 9,0:1 ratio? |
Originally Posted by Mazdaspeed_Miata
(Post 1479686)
I don't think so. The engine should be good for around 350rwhp.
So what parts would you recommend to purchase? Manley rods should be ok. But what pistons? Wisecos or Supertech? Go for 85,5mm bore? 9,5 or 9,0:1 ratio? Manley rods, Supertech or Wiseco pistons @ 83.5mm or 84mm bore size. ACL main and rod bearings, ARP head studs, ARP main studs, OEM Mazda Head gasket. If the head looks good just put new valve seals in it and plane it flat. Kraken manifold and downpipe with your GT2560R, MS3 w/ 640cc flow force EV14 injectors. edit : Do 9.0 : 1 pistons because you want to run high boost on pumpgas. Also do not bore out past 84.5mm with boost, keep it ideally at 83.5 or 84mm edit #2 : A boundary Oil pump wouldnt be a bad idea either, I went with one. Once you pass 250whp on a stock pump it gets a little too close for comfort if you know that I mean |
Do not bore for power. Run smallest pistons you can. Pump gas = 8.6:1 pistons.
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Originally Posted by Mazdaspeed_Miata
(Post 1479686)
I don't think so. The engine should be good for around 350rwhp.
So what parts would you recommend to purchase? Manley rods should be ok. But what pistons? Wisecos or Supertech? Go for 85,5mm bore? 9,5 or 9,0:1 ratio? You don't think what? What do you mean the engine should be good for 350whp? There is a formula to what a lot of people run with relative success. Choose one and run with it. I personally went with 84mm supertech 8.6:1. The rest is pretty standard miata turbo prescription. All the hard work has been done and is documented in past threads. |
Originally Posted by andyfloyd
(Post 1479689)
edit : Do 9.0 : 1 pistons because you want to run high boost on pumpgas. |
Originally Posted by andyfloyd
(Post 1479689)
edit : Do 9.0 : 1 pistons because you want to run high boost on pumpgas.
Originally Posted by concealer404
(Post 1479690)
Pump gas = 8.6:1 pistons.
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Originally Posted by Savington
(Post 1479709)
WrongRight
Originally Posted by 18psi
(Post 1479707)
step 1: ignore this bad advice
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Originally Posted by 18psi
(Post 1479707)
step 1: ignore this bad advice
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Originally Posted by andyfloyd
(Post 1479729)
lol, ok because 8.6 and 9.0 are VASTLY different. OP good luck with your build.
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Originally Posted by concealer404
(Post 1479732)
One lets you hit MBT on pump gas, the other doesn't. Pretty different.
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Originally Posted by andyfloyd
(Post 1479736)
You all were telling him to run stock pistons previously in the thread, which are at least 9.0 CR most of them are north of 9.4:1. Why cant you hit MBT on 9.0:1 pistons? You would run slightly less boost and be able to achieve the same power numbers at the lower boost due to the higher static compression ratio with the same timing # you would have on the 8.6CR. With less boost you should be able to achieve MBT on either would you not?
Timing is everything on a BP. Compression is not. This isn't like... a new thing. |
Originally Posted by andyfloyd
(Post 1479736)
You would run slightly less boost and be able to achieve the same power numbers at the lower boost due to the higher static compression ratio with the same timing # you would have on the 8.6CR.
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Originally Posted by sixshooter
(Post 1479741)
That's actually a significant misunderstanding of how it works.
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