DCM

ok so i got a b16 out of a 99 si and put it in my 99 ex , the motor has ITR cams,ITR intake manifold,DC Headers ,Injen intake ITR TB.
Im using the si ecu and harness it runs fine but then when i test drove it it over heated so i pulled over and cut it off to see if it was leaking coolant or anything no leaks but the car wouldnt cut back on i had to push it back to my house .
Any body have ideas why it A) OVERHEATED B) WONT START NOW

THANKS ALOT

Hanmin

A, either thermostat stuck closed, you had insufficient coolant, your headgasket blew, the fan doesn't work, or your detonating like a bitch because you forgot that you need the 91 octane gas while you still had the 87 in there. By SI ecu, I hope you don't mean the p28, or an ecu with the knock sensor disabled.
B, you overheated it too much and lost compression, or you did the swap wrong and something happened in coincidence to this event.

geneeunit

you maybe have air in the coolant lines? causing it to overheat.

ive got no comment on it not starting after wards though, bump so someone with some knowledge can help you out.

DCM

welli forgot to say i replaced the thermostat, i did have 87 in the car but went andput 93 in it,the fan does work, not BHG cause no smoke or visible leaks ,why cant you use the p28 ?
so i lost compression = me being ****ed ????

Hanmin

you losing compression means you warped something, most likely the head.

because the p28 doesn't look for a knock sensor, so if your motor was detonating like a ****, your p28 doesn't know and it can't retard the timing for ya.

DCM

so lets say worst case what should i do ? im a noob at this
what ECU should i run GSR ?
if they head did warp what should i do ?
how can i tell if it detonated?

Hanmin

check your spark plugs to see what happened inside the chamber, you should be able to find a chart somewhere online.
You should run a chipped ecu with the itr basemap.
Check your compression first, if it's down then I say put that y8 back in a do a breakdown, pull the head and if obvious warping is not seen, then take it to a reputable shop and ask them to check for warping, they'll measure it for you and will tell you if its warped or not, next get the block checked, if they're good reuse em, if not then replace them and go from there. or be a scamming ***got and sell it as a running motor and hope that they don't bring a compression tester.

DCM

also the engine wonst start the fuel pump wont turn on it wont turn over at all

MugenSpec-Ny

how would a p30 chip do? that come with knock sensor enabled?

other differences between the 28&30?

i plan to do a b16 swap this fall. the b16 i was looking at from HMO comes with the P30

sry 4 offtopic

original_CRX

A p30 with mugen chip is wat i run in my 92 hatch with my B16a... plenty of power and havent had any problems with it.... and Im bout to turbo it...

Former User

Regarding the no start, because the fuel pump does not prime, you should check the main relay and for blown fuses under the hood and dash. Do you also lack spark? If so, check the critical ground wire on the thermostat housing. Is the CEL ON?

DCM

FIXED !!!! wont start= trans ground off overheating =radiator clogged

new problem did a compression test all cylinders were at 120

93egSLEEPER

wow thats waaay low. a stock b16 should sit around 220.

hoffmanb16

don't crap you pants just yet. Might just be a bad tester, at least they were all the same numbers, try another test with another tester. If your test read 200 120 200 200 thats really bad. Try it again with different comp tester.

DCM

alright ill try all that also i drove all the way from waldorf to springfield no problems and this morning it starts but idles at 100 then with gas kills it

screamingB16

obd2 p28 has a knock sensor

93egSLEEPER

you dont need a knock sensor.

DCM

Well im running the P2T I THINK the si ecu ,i plan on running the p28 casue the crank sensor is ****ed so i cant hit vtec