beat

iTrader: (1)

Hi,

I currently have a JDM B18C with JRSC.
Ive decided to go back to N/A as I find the belt and pulleys issues too annoying for the JRSC.

My current engine has

- CP pistons 10.5CR
- Manley rods
- Supertech Valves, valve springs and retainers

I'll need the following for my N/A build and would like some recommendations based on what I'm looking for.
We have a yearly inspection which involves emmisions in Hong Kong, so I'll need a cam that doesnt affect the emmisions much at idle if they do affect it. (Im not knowledgable in cams at all as Ive never looked into changing them until now.)

1. I would like to raise the compression ratio to around 12-12.5 Is there a certain brand I should look to use? The only complaint I have with the current CP pistons is the piston slap during cold startups. It seems to be a constant with all forged pistons?

2. Cams. I lack knowledge when it comes to cams. I would like a cam that would give me gains mainly on the higher end of the powerband as I have a close ratio gearbox. Ive done some research on cams, but they all just lists the specs and doesnt really tell the characteristics of the gains and the amount of gains.

3. Header. I am now using a Kamikaze header thats only good for the JRSC application. Which header is recommended for an NA build like this?

4. Intake manifold. As ive misplaced my OEM intake manifold, im looking to buy a new one. A Skunk2 one will do?

5. injectors. what size injectors should i go for?

Any help would be appreciated.

Thanks!

beat

iTrader: (1)

Bump.

beat

iTrader: (1)

Anyone?

atomic civic

iTrader: (2)

Wiseco Pistons, Skunk 2 Pro 2 Cams, ASP Headers, Shunk2 Ultra Street and injector dynamics id1000 or id750.

beat

iTrader: (1)

I currently have the ID750 injectors.
Will they be too big for the NA 1.8 application?

raverx3m

iTrader: (1)

pro series cams primary lobes are massive

you need to go with skunk2 tuner series cams

or buddy club cams

or contact rocket motorsports and DDtech on facebook both of those guys can make you cams and help you with camshaft selection for your motor

you also need to tell us more about your emissions testing what you can and cant have and what exactly they inspect?
do they visually check under the hood for aftermarket parts?

atomic civic

iTrader: (2)

I am running id750 on my build which is a 82x89 and I am running e85.

beat

iTrader: (1)

Im not familiar with whats involved in the yearly emissions test. But I have a friend that installs the original exhaust with cat and original ecu every time he goes for the test and he passes it without a problem. From what I know, the testing involves idling your car and testing the emissions and holding the rev at 2500rpm at a standstill for another test and thats it.
I dont think they check whats under the hood. Even if they do, I dont think they'll give you any trouble with just an intake. Thats all Im going to have under the hood anyways.

Changing cams is not a must for me. It depends if it affects the emissions and makes it a hassle for the yearly inspection. Cant seem to find info on the cams regarding emissions online. Im currently looking at the Skunk2 tuner series stage 2. In the description, it mentions it retains factory idle and low speed emissions.

305-05-0145 - Camshafts - Engine - Skunk2 Store

beat

iTrader: (1)

So I can keep the ID750 for my application? Does running E85 make a difference?

vtecmaster85

yea e85 does make a difference. my pick of camshafts would be crower 63402-2 or 63403-2 if you have more compression. the cams are cheap and provide nice results. toda replica header or rmf v2 header should do. ID750 is sufficient for a N/A setup on e85. over the 403 cams id go pro 2 cams seeing you have the compression for this 1.8L

beat

iTrader: (1)

Pretty much set with all the parts other than the pistons. Im looking to go around 12-12.5 compression. The pricing for pistons seem to be similar between Manley, JE, CP, Wiseco, etc.. Theyre all around the $500-650 range.
How should I choose between them?

Other than the pistons, Ive decided on the following:
1. Skunk2 Ultra series street intake manifold
2. Skunk2 Tuner series stage 2
3. PLM SP 421 header https://www.privatelabelmfg.com/prod...-sp-header.htm

Any opinions?

vtecmaster85

my opinion would be the crower 63403-2 cams. ive found listings as low as 418 for them. now if you can get the s2s2 for cheaper then yea. header id go with a PLM RMF v2 header. the IM you picked is good.

beat

iTrader: (1)

You mean this one?
https://www.privatelabelmfg.com/prod...-v2-header.htm

I think this header is not quite a bolt on. It requires a half core radiator. I assume that means the half sized ones used on civics?

vtecmaster85

yes that one. if not, toda replica. they do well on 1.8 and 2.0 engines.

beat

iTrader: (1)

I'm choosing between these two. Leaning towards the SP

https://www.privatelabelmfg.com/prod...-sp-header.htm
https://www.privatelabelmfg.com/prod...-ta-header.htm

vtecmaster85

how come?

vtecmaster85

https://honda-tech.com/all-motor-nat...-test-3005484/

check this out

beat

iTrader: (1)

I assume the TA is a road replica? Which is the SP?

So you recommend the Toda replica?

vtecmaster85

yea

vtecmaster85

check out post number 246


https://honda-tech.com/all-motor-nat...798896/page10/

UncleD

iTrader: (2)

This looks great to me. Top end will scream. The SP or TA will both do you very well. Good luck!

beat

iTrader: (1)

Thanks!

I'll post updates. Taking out the engine next week and will get the project started.

beat

iTrader: (1)

Engine is coming down this week.

beat

iTrader: (1)

Have been busy lately and haven't had time to update.
Engine has been disassembled. Unfortunately for me, the previous engine builder or tuner probably didn't do a good job.
My crank and cyl wall is scratched. As my cylinder is already 81.5 and I don't trust machine shops in HK, I've decided to buy a new block and crank.

Here are some pics.

beat

iTrader: (1)

Other than my cam and piston choice, everything else has been set.
Here is what's troubling my choice.

I had piston slap on my previous setup using CP Pistons. I'm not sure if it was the previous engine builder not doing the install properly, but from research that I did and asking around, piston slapping is very common wor forged Pistons. A friend of mine recommended either Mahle or supertech Pistons for less piston slap. OEM B16B Pistons are also on my list.
Any opinions on these 3 Pistons?

Concern regarding the cam choice is the piston to valve clearance. I know nothing about this. I did some reading and there seems to be no definite answer as to which piston will clear. I wouldn't wanna buy some Pistons and cams and then find out that they don't fit together.

Would I be getting clearance issues with these 3 Pistons going with the Skunk2 tuner 2 cams?

Any advice would be appreciated.