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D15a3 Mods

Started by J's 87Sicivic, Dec 25 2003 10:32 PM

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10 replies to this topic

#1
J's 87Sicivic

Posted 25 December 2003 - 10:32 PM

Granny

Group: Members

Location:Gainesville Fl.
Drives: 87 civic Si D15A3, 92 Storm GSi 1.8l twin cam
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Hey everyone,

I just got my Si just a little bit ago. Im very happy with its performance, but it could be better. I know that the D15 and the D16 use the same head gasket. Has anyone swapped out the 12v head for a 16v head? If that wont work, what could i possibly do to the D15A3 to get more power. I was looking at parts there is a lot of aftermarket goodies for the 88 and up civics but the parts for the 87 and down are slim and none... is there cams and oversize pistons avalible?

thanx

Jamie

I've always been kinda an oddball

#2
civtrx

Posted 25 December 2003 - 11:19 PM

Craig M.

Group: Members

Location:Regina, SK, CANADA
Drives: 1987 Honda Civic 1500-S

http://www.opmautosp...iccrx84_87.html

http://lightspeedrac...exproducts.html

that should maybe help you out.

^^^^^ R.I.P 05/16/05. . . you will be missed my Civic! ^^^^^

#3
sspcivic31

Posted 25 December 2003 - 11:30 PM

Grog no like , Car no work! ARRGH!

Group: Contributing Member

Location:SGP, Texas
Drives: 87 Civic SI
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QUOTE (J's 87Sicivic @ Dec 25 2003, 09:32 PM)

I know that the D15 and the D16 use the same head gasket. Has anyone swapped out the 12v head for a 16v head?

the ew/d15a3 and the d16a1/zc share the same head gasket. the later d16a6 and on have a different gasket.

GTpilot has swapped the head fron an 88-89 d16a1 to an ew/d15a3 block. search the sight you will find the thread and he has pics in his gallery

#4
eastsiderider

Posted 26 December 2003 - 06:23 PM

Function over form!

Group: Members

Location:Maryland
Drives: 91 Civic Standard Hatch (B16 powered), 02 Civic EX, 03 Civic Si R.I.P.
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as far as pistons go, you can swap out the d15a3 pistons with some nice je forged d16zc pistons...........although if you went through the trouble of that you should also bulk up the rods

SportInjectedClub

#5
rextec

Posted 27 December 2003 - 02:23 PM

coming along.......

Group: Members

Location:So. Cal.
Drives: 86 crx si, 98 civic dx hb
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you would need to bore out the d15a3 in order to fit those pistons...right?

#6
IamNOTaRicer

Posted 27 December 2003 - 02:31 PM

U sux0rz @ teh intArweb

Group: Members

Location:Claysburg, PA
Drives: '86 Civic Si, '81 Mazda RX-7

Yes, from what I've been told, a 1 millimeter overbore is required to fit the D16 pistons into our engines.

--Danny

#7
J's 87Sicivic

Posted 27 December 2003 - 10:55 PM

Granny

Group: Members

Location:Gainesville Fl.
Drives: 87 civic Si D15A3, 92 Storm GSi 1.8l twin cam
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Thanx All

You guys have been realy helpful.
keep the info coming
thanx again

Jamie

I've always been kinda an oddball

#8
J's 87Sicivic

Posted 27 December 2003 - 10:59 PM

Granny

Group: Members

Location:Gainesville Fl.
Drives: 87 civic Si D15A3, 92 Storm GSi 1.8l twin cam
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What would you use, as far as bulking up the rods? Im new to the hondas and
I dont know that much about the compatability of the components.

I've always been kinda an oddball

#9
gtpilot

Posted 29 December 2003 - 10:47 AM

Leadfoot

Group: 2011 Contributing Member

Location:Lakeway, TX - USA
Drives: '87 CRX Si - HYDRA, '86 CRX Si
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Don't worry about the rods - I have stock rod race motors that I spin over 8000 RPM and make way more HP than you will get out of a street motor. Just put in a set of ARP rod bolts and have the big end of the rod resized (if they need it - your machinist will be able to tell) and then get them rebalanced.

Kirk

Houseman Autosport
Mugen Body Kit
HYDRA