R18 N/A Tuning

13468 Views 14 Replies 6 Participants Last post by Kevin1166, 3 mo ago

Kevin1166

Discussion Starter · Sep 30, 2020 (Edited)

Car: CIVIC FD1
Engine: R18A1
Valves: Ferrea
Spring valve:BC
Valve retainer: BC
Camshaft: skunk2
Piston: 81.5mm. Cr.11.5:1
Crankshaft: R20
Pulley : SPR super lightweight
Radiator : K6 PERFORMANCE
Radiator Hose : K6 PERFORMANCE
Intake: K6 PERFORMANCE
Header: Megan Header + Down pipe custom
Exhaust: KAKIMOTO+FUJITSUBO POWERGETTER
Clutch: INNER MOTIVE Twin plate clutch
LSD: K20A TYPE-R
Gear: 3-4-5 New gear ratio
Engine management system: HONDATA Flashpro
Spark Plug: NGK Iriway No.9
Fuel pump: DW65c
Fuel: E85
Other: ETC

VDO: R18 0-180 Km/h

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gg974

· #2 · Dec 26, 2020 (Edited)

Hello,

can you write a bit more about this upgrade? Can you share the links to the parts you ordered? What dyno shows...?

I have too FD1 model with the same engine, so far I did some NA upgrades, probably same Skunk2 crankshaft as you have, NST pulleys, WeaponR intake manifold, NGK Iridium sparks, custom 2.5" exhaust sys with Magnaflow 200cel cat... DYNOmite showed 156hp 177Nm...

I'll go ahead with upgrades, thinking of going into FI, but saw your post after a while of searching and got interested to where NA upgrades and gains can go with this engine. I'm not focusing on race setup at all.

Thank you!

Kevin1166 said:
Car: CIVIC FD1
Engine: R18A1
Valves: Ferrea
Spring valve:BC
Valve retainer: BC
Camshaft: skunk2
Piston: 81.5mm. Cr.11.5:1
Crankshaft: R20
Pulley : SPR super lightweight
Radiator : K6 PERFORMANCE
Radiator Hose : K6 PERFORMANCE
Intake: K6 PERFORMANCE
Header: Megan Header + Down pipe custom
Exhaust: KAKIMOTO+FUJITSUBO POWERGETTER
Clutch: INNER MOTIVE Twin plate clutch
LSD: K20A TYPE-R
Gear: 3-4-5 New gear ratio
Engine management system: HONDATA Flashpro
Spark Plug: NGK Iriway No.9
Fuel pump: DW65c
Fuel: E85
Other: ETC

VDO: R18 0-180 Km/h

View attachment 243321

Kevin1166

Discussion Starter · #3 · Jan 14, 2021

I have some more modifications.

New! 80mm. Throttle body on my R18.

Civic R18 With DBW 80mm Throttle body

CIVIC R18 80mm. Throttle body (Test Run)

Reactions: 1

gg974

· #4 · Jan 14, 2021

Hey Kevin, nice!

Can you please provide me some more infos on my questions?

Is R20 crankshaft "drop in" or any extra work need to be done? What is the difference vs stock? Which piston did you put in?
Did you put it on dyno yet?

All infos are welcome please.

Kevin1166 said:
I have some more modifications.

New! 80mm. Throttle body on my R18.

Civic R18 With DBW 80mm Throttle body

CIVIC R18 80mm. Throttle body (Test Run)

Kevin1166

Discussion Starter · #5 · Jan 15, 2021 (Edited)

gg974 said:
Hey Kevin, nice!

Can you please provide me some more infos on my questions?

Is R20 crankshaft "drop in" or any extra work need to be done? What is the difference vs stock? Which piston did you put in?
Did you put it on dyno yet?

All infos are welcome please.

Hi
You can do it There are some small fixes But it is something that is easy to do.
Crank : R20
Rods : R20
Pistons : R18

If you have a piston and rod for high compression ratio
It will be even better.

You're welcome

View attachment 243819

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gg974

· #6 · Jan 20, 2021

Hi, thank you for your feedback! Here in EU we're quite limited with upgrades so R18 is basically the only engine for FD model to be "worth" upgrading. Also I'm sceptical to go into FI (on forums everybody will push turbo as the "only" option...), which may be perfectly legal in USA or somewhere else, but not here in EU. Bolt-ons ans similar "non-visible" upgrades are still something to consider here, even if you get "less bang for a buck".

Did you find any heating issues as you mounted bigger radiator? Also issues with fuel pumping? Did you put better springs/retainers for safe sake or on purpose? Did you find any troubles mounting LSD on this car...? (I see the reason why LSD as even on mine car front wheels slips easy...)

Please forgive me on my questions, I'm not mechanic but I'd like to find a purpose with these parts.

Many people will mount turbo system on this engine, not fail safing many components, which doubts longevity.

I want to "ride" on safe side and take some other costs into equation as this car is much more for street use...

Thank you for your feedback!

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Reactions: 1

Kevin1166

Discussion Starter · #7 · Jan 20, 2021

Hello!

Your car is cool
If you install a large radiator It will help you with the heat.
I advise you To replace the thermostat,you should use Civic 96 thermostat.
It fits well. And it has a temperature value of 78 degrees C.
It will reduce the heat better than the OEM(82degrees C).

LSD you have to trim in the footer. You will find it stuck.
And you know you have to mill it a little, the speed gear can use the same thing.
I hope it will be helpful for you.
I am happy to advise

thank you

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gg974

· #8 · Jan 21, 2021

Thanks!

OK I'll keep it in my mind!

Did you changed the injectors too?

I guess that because of R20 components you added you changed valves/springs or am I wrong?

Which 81,5mm piston did you put in? Did you had any extra work to do as it's 0,5mm wider?

PS I've sent you my email in PM

Kevin1166 said:
Hello!

Your car is cool
If you install a large radiator It will help you with the heat.
I advise you To replace the thermostat,you should use Civic 96 thermostat.
It fits well. And it has a temperature value of 78 degrees C.
It will reduce the heat better than the OEM(82degrees C).

LSD you have to trim in the footer. You will find it stuck.
And you know you have to mill it a little, the speed gear can use the same thing.
I hope it will be helpful for you.
I am happy to advise

thank you

View attachment 243848 View attachment 243849

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Batavia

· #9 · May 18, 2021

I assume that you are saying to maintain optimal coolant temperature, we need to change our thermostat.

But which low temp thermostat should we buy?

Do you refer to 1996 Honda Civic thermostat?

I'm in for more details...

Kevin1166 said:
Hello!

Your car is cool
If you install a large radiator It will help you with the heat.
I advise you To replace the thermostat,you should use Civic 96 thermostat.
It fits well. And it has a temperature value of 78 degrees C.
It will reduce the heat better than the OEM(82degrees C).

LSD you have to trim in the footer. You will find it stuck.
And you know you have to mill it a little, the speed gear can use the same thing.
I hope it will be helpful for you.
I am happy to advise

thank you

View attachment 243848 View attachment 243849

TheLastMentor

· #10 · May 18, 2021

This mans r18 spanks half of the k20's on this forum. How did I miss this? Really cool build, sub'd.

EDIT: Ok, I understand the build, one part I've never seen though...

What are those?

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Kevin1166

Discussion Starter · #11 · Jun 16, 2021

Batavia said:
I assume that you are saying to maintain optimal coolant temperature, we need to change our thermostat.

But which low temp thermostat should we buy?

Do you refer to 1996 Honda Civic thermostat?

I'm in for more details...

Yes. 1996 Honda Civic thermostat 78c.
It can fit with R18.

Kevin1166

Discussion Starter · #12 · Jun 16, 2021

TheLastMentor said:
This mans r18 spanks half of the k20's on this forum. How did I miss this? Really cool build, sub'd.

EDIT: Ok, I understand the build, one part I've never seen though...

View attachment 244676

What are those?

😅 I'm sorry I didn't take it out.

waleed_fd2

· #13 · Dec 7, 2021

Wow man you did a great job this build competes with stock FD2R man. I have a question about LSD 6 speed from DC5. Can it fit bolt-ons or the FD2R LSD? You said "LSD you have to trim in the footer You will find it stuck. mill it a little". I didn't quite understand it as i am eager to follow here with my FD1 as well throw out 5 speed and swap R20 too with 6 speed LSD. Thanks

newtonmendez

· #14 · 5 mo ago

gg974 said:
Thanks!

OK I'll keep it in my mind!

Did you changed the injectors too?

I guess that because of R20 components you added you changed valves/springs or am I wrong?

Which 81,5mm piston did you put in? Did you had any extra work to do as it's 0,5mm wider?

PS I've sent you my email in PM

Greetings, could you please contact me on my social network Insta @fg1mindaily I tried to send you a private message but it was impossible. Thanks

Kevin1166

Discussion Starter · #15 · 3 mo ago

waleed_fd2 said:
Wow man you did a great job this build competes with stock FD2R man. I have a question about LSD 6 speed from DC5. Can it fit bolt-ons or the FD2R LSD? You said "LSD you have to trim in the footer You will find it stuck. mill it a little". I didn't quite understand it as i am eager to follow here with my FD1 as well throw out 5 speed and swap R20 too with 6 speed LSD. Thanks

You can use the DC5 LSD and the FD2R, both can be retrofitted to your R18 transmission.

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