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Old 06-12-2016, 09:44 AM   #1
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Default Reinforced engine recipe I got - fixed

Hey,

I'm thinking of reinforcing my engine for higher boost and power, it is a 97 turbo miata with stock internals running up-to 15psi + 6spd trany + NB LSD.

This is a list I got, is it all necessary ? any thing else is missing ?

Thanks !

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Reinforced engine recipe I got - fixed-80-capture_d759ea2c3dac166c0d31f005fe148c105f88bbff.png  

Last edited by elior77; 06-12-2016 at 01:14 PM. Reason: bad pic link
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Old 06-12-2016, 10:50 AM   #2
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Quote:
Originally Posted by elior77 View Post
This is a list I got, is it all necessary ? any thing else is missing ?
Yes, the actual list itself is missing.

You can't hotlink to an attachment on a different forum. The attachment won't work for those of us who aren't logged into said forum. It just looks like this:


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Reinforced engine recipe I got - fixed-80-blob_a5e2b220b5111b432ba25e5033c92e9a5e9f95d0.png  
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Old 06-12-2016, 11:12 AM   #3
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No Pistons?
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Old 06-12-2016, 11:34 AM   #4
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No Pistons?
1st line along with the rods... 9.0:1
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Old 06-12-2016, 01:22 PM   #5
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You want 8.6:1 Supertech pistons with Weisco rings. Order them from TrackSpeed Engineering. The lower displacement pistons give you a bit more security on pump gas. Pick up rods off ebay with ARP2000 bolts. Stock headgasket is good for 84mm pistons, I use ones off ebay for $26 and they have worked great on several builds.
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Old 06-12-2016, 01:28 PM   #6
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"ebay rods" as in the cheapest I can find ? cxracing like ? 83mm is right ?

Thanks !
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Old 06-12-2016, 01:30 PM   #7
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Price seems a little high for rods/pistons/rings (I'm assuming rings are included in line 1) why not go 8.6:1 cr for boost? What brand pistons and rings are you using? Are you taking required machine shop work into account? What about a fresh seal /gasket set and timing belt kit? You could save by going ebay rods and also stock pistons, if your power goals aren't too high, especially if running e85. You need to define your goals more though.
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Old 06-12-2016, 01:38 PM   #8
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My goals are 300-350whp.

I understand that forged rods can not be fitted with stock pistons due to rod bushing size difference.

Currently I'm running stock internals, the offer is for CP 9:1 83mm pistons + manly rods.

If the engine is fine and running strong can I skip the machining part ?

I'm running pump gas 95/98 ron.
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Old 06-12-2016, 01:48 PM   #9
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Forged rods work fine with stock pistons.

You want 84mm Supertech Pistons. These pistons specifically in 84mm 8.6:1 compression.

As for ebay rods as long as you get ones with ARP2000 studs you will be fine.
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Old 06-12-2016, 01:53 PM   #10
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Any reason not to use my current pistons ?

They run fine on pump gas up-to 15psi
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Old 06-12-2016, 02:01 PM   #11
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Your stock pistons? Well generally they are good to a little above 300whp. As long as you have a perfect tune you are fine, but any det and they will crack. Patsmx5 has cracked 2 sets around 350whp. I would buy forged pistons just so you never have to go into the motor again. I would also buy a BE oil pump.
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Old 06-12-2016, 02:06 PM   #12
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ok then,

ebay rods+arp2000
84mm(bored)/83mm(stock) 8.6:1 (why not stock 9:1?)
BE oil pump
stock head gasket

what about the rest in the list ?

Thank you for your input
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Old 06-12-2016, 05:33 PM   #13
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Quote:
Originally Posted by elior77 View Post
ok then,

ebay rods+arp2000
84mm(bored)/83mm(stock) 8.6:1 (why not stock 9:1?)
BE oil pump
stock head gasket

what about the rest in the list ?

Thank you for your input
What head are you using
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Old 06-12-2016, 06:20 PM   #14
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What fuel injectors
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Old 06-12-2016, 08:10 PM   #15
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ok then,


84mm(bored)/83mm(stock) 8.6:1 (why not stock 9:1?)
Because youre on rubbish fuel and youll make more power putting in extra timing rather than having more compression.

Dann
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Old 06-13-2016, 02:36 AM   #16
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Stock NA8 head, currently RX7 460cc injectors @ 92%.... I will get new ones... 700-800cc ~
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Old 06-13-2016, 08:37 AM   #17
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With this in mind:
Quote:
Originally Posted by elior77 View Post
My goals are 300-350whp... I'm running pump gas 95/98 ron.
I would definitely do this:

Quote:
Originally Posted by shuiend View Post
I would buy forged pistons just so you never have to go into the motor again. I would also buy a BE oil pump.
Quote:
Originally Posted by shuiend View Post
You want 8.6:1 Supertech pistons with Weisco rings. Order them from TrackSpeed Engineering. The lower displacement pistons give you a bit more security on pump gas. Pick up rods off ebay with ARP2000 bolts. Stock headgasket is good for 84mm pistons, I use ones off ebay for $26 and they have worked great on several builds.
Additionally...

Quote:
Originally Posted by elior77 View Post
what about the rest in the list ?
ACL race bearings and ARP head and main studs are all good choices.

Quote:
Originally Posted by elior77 View Post
RX7 460cc injectors @ 92%.... I will get new ones... 700-800cc ~
At >300whp just get ID1000s.

Quote:
Originally Posted by elior77 View Post
If the engine is fine and running strong can I skip the machining part ?
You're already sinking a bunch of money into the engine and trying for a bunch of power, It doesn't make much sense to me to skip the machine work.
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Old 06-13-2016, 09:36 AM   #18
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Thanks for the input !
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Old 06-13-2016, 10:12 AM   #19
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Since you are in Israel I know shipping will be a pain. I would highly suggest emailing Savington at [email protected] and talking to him about what you need. It might not be the absolute cheapest place to order from, but would probably be the easiest to make sure everything is correct and comes in one box. He can hook you up with everything you need for a bombproof bottom end, along with the injectors and such you need.
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