All motor LS buildup, my setup in the basement so far:
b18a block overbored, honed
USDM ITR pistons .25 overbore
shaved LS rods
ARP rod bolts
balanced rotating assembly
micropolished crank
ACL bearings
Exedy racing clutch
RSR exhaust
Cusco catch can
LS head with 96K kms

c-speed's calculator puts me at 10.4 CR or so .. my questions:
1) My target hp goal is 170-180 .. but I do want to maintain somewhat decent gas mileage .. would Crower's 403 cam and b16 dual valve springs be sufficient? I want to use stock valves and guides.
2) Will my current injectors (LS) supply enough fuel?
3) Hondata doesn't have an application for my non-obd b18a, so I am looking at an SAFCII unless there's a way to still use the Hondata? (S200)
4) Should I use a 2-layer head gasket (and who makes one for the b18a that's 0.019"?)

All motor guys please help! I want a significant power increase and half decent gas mileage as well, so I am willing to come under my horsepower goal to do that if necessary.

 

If I were u I would use aem ems if not hondata, also i would upgrade to better dual valve springs and titanium retainers. you can take one layer or two layers out of your stock headgasket, but then you will run into piston to valve clearance issues and sealing problems, i reccomend taking one of the outer layers out of your head gasket unless money is not an issue.

 

I definitely won't be in the EMS price range for an ecu, which is why if I can't configure a Hondata system, I'll run the SAFCII .. buying a 2-layer head gasket isn't out of the question though .. I will be claying for clearances. For reliability and wear issues, I want to stick with OEM valvetrain components (except cams, OEM b16 valve springs) .. I don't want to have to keep an eye on titanium retainers for wear. Thanks for the suggestions tho, keep em coming .. these questions are hopefully going to help decide my next purchases.

 

An an all-motor LS, that compression is fine after coming from a 9.2:1 CR. I wouldn't stick to a complete OEM valvetrain if you plan on going with aftermarket cams. Would recommend going with aftermarket valve springs to suit the cams. Not very familiar with the LS valves and retainers as compared to the B-series VTECs, but don't think they'd need to be replaced. No need for the titanium retainers, I too would hate to check them every 20k miles to see how flat they've become.

 

Thanks for the reply. As far as I know, the B16 dual valve springs fit on the LS retainers, I'm hoping that's sufficient to handle the cams .. if not I'll probably look at some Crowers, only problem is they recommend their titanium retainers with their valve springs .

 

Ive got a set of billet rods for the ls if you are intrested. Drop me a pm if you are.

 

you just have to run a differnet ecu to run hondata go on hondata.com and find your local dealer and contact them If I were you I would just go ls-vtec it's easier to make good power then using the more restrictive ls head

 

You cannot run the b16 outer valve springs because they are too short, but you can use the inners in tandem with your LS springs.
I currently us the the stock LS springs with my 403's, but I would not take it past redline.

You can use the stock injectors, but they will be running close to their limit. You might as well upgrade to slightly bigger injectors for added insurence.

As for using a thinner head gasket, I would just go with a slightly higher compression piston. Use the jdm type-r piston and you will have a CR of ~10.8, which will be close to what you'd get running a single layer head gasket. Now if you already have the pistons then your kinda stuck, but I'd still be nervous about using a thinner headgasket.

As for hondata you can use it look through this post for more info. http://www.team-integra.net/se...ion=2


Modified by Stubbs at 12:16 PM 3/6/2004


Modified by Stubbs at 12:19 PM 3/6/2004