spoon93

Ok guys I finally got my motor assembled and installed into a ef problem is the car won't start another is I figured I'd do a comp test and it yielded 180 across this can't be right here's my set up

B20 block 84.5

Rs 11:1 I beleive but what I've seen it say 11:8-12:1 depending on which head is used

Eagle rods

Micro polished crank

B16 head stock ports with sk2 valve train

Slight mill to the head and block has a slight deck wich should raise the comp and I'm using a stock hg from golden eagle

Bisi header

Bc spec Iv cams sk2 gears tried at 0 0 and now at intake +2

Car turns over but will not start at first is would start then immediately shut off now it just cranks and nothing I've tryed diff dizzy's and diff ecu's and nothing also the comp seems low. The block was used already in a running car so rings are sat already but the head is fresh from maching shop with all the internals is it possible the car needs to start up and such and valves to seat then I'll yield a higher number or is that just it cause 180 is about 10:1 or so lmk what you guys think thanks ht

mouab18c1

iTrader: (5)

Check timing? Getting fuel? Could be anything. Low compression is most likely indicating that your timing is off.

hondawhiz

sounds like you have no gas

cibao2ner

my ls at 13:1 compression got me 240psi on the compression check..haven rechecked it yet but yea your compression will increase when the rings seat..

make sure you have fuel pressure...and what ecu/injectors are u using?

BigBlock22

I would check the fuses, then relays, starting with the main relay and go from there. once you know you have spark and correct timing, i would then move onto making sure the fuel is actually getting to the fuel rail with adequate pressure. Following this you should check the injectors to make sure they can deliver fuel into the engine. you should have enough compression for the engine to turn over unless the cam timing is off marginally . Can you tell us about this harness you are using and what ecu/injectors are being used like asked before

spoon93

Rings are set already the head is fresh though as far as harness it's basically the stock harness with grey clips now and the Ecu jumper

spoon93

Rite now I'm using Ls injectors and p30 Ecu also GSr Ecu just to start it up and make sure it runs b4 the tune

negusjuda

well for one thing i wouldnt run that car with stock ls injectors, also what compression tester did you use i know with my crafstman tester i get 235 across and i should be right at 11:1 but when i used a snap-on tester we have a school i was getting 185 across. the numbers across are more important then how high the numbers are, also cam size will also determine compression numbers. if you run say 11:1 compression with big cams your compression numbers wouldnt be very high vs high compression with say smaller cams like itr cams

negusjuda

also is there any vacuum leaks or did you maybe cross the map and tps sensor plugs that seems to be a very common issues since the plugs are identical

spoon93

No there not crossed and I dnt beleive there is vac leaks. Also I used a cheapy comp tester. Guess that's Tru I am using pretty big cams as well ima try a few other suggestions on here and well see thanks guys

spoon93

So you think the 180 comp could be because of the bc4 cams if so will the motor still make power? Just wanna know thoughts or are they too big?

DDTECH

Whats valvelash?

Your cam gear settings aren't correct, at all.

Remove plug wire, verify you have spark.

remove fuel line and verify you have fuel, if you have both, something is not allowing the car to start - Might be compression, i've had plenty of cars with too tight of a valvelash not start or have a hard time cranking over.. simple diag process here.

spoon93

Valve lash is .07 and .08 to buddy club specs and I do have spark and
Fuel the weird thing is I'll turn key on and fuel pres will go to 44psi and the
Slowly go down after sitting for a bit

DDTECH

IF i recall correctly, i THINK the BCIV's centerlines are
exhaust centerline 110 BTDC
intake centerline 96 ATDC

But i've seen a few actual Buddy club sheets that say 102/104.. so i dont know for sure..

I would "start" with +1 int and +3 exhaust and see how that goes.. Check your timing, it sounds as if you're bleeding off compression a little too fast.. Do a google search for the BCIV centerlines or Degree settings and see what you come up with.

Mechanatech

hmmm.... make sure your distributor is going into the cam correctly and not being forced in, it is possible for timing to be 180 degrees out if the distributor is forced in the wrong way. Make sure your spark plugs aren't wet with fuel.

DDTECH

It'll make a noise and if you did do that, you would notice. The dizzy doesn't go in easy when its 180 out..

beecee18

Hi Im helping this OP with this setup the spec sheet I have from his original box of cams do say 102/104, although i was told 96/110
I think those #'s send the adjustment pretty far off 0, I think R is 98/110
wouldnt that put these cams +6/+7 or so, We tried to degree them I was just not confident that the VTEC was locked in with all the air leaking out, just didnt seem right to me. but i come to find out just check to see if the rockers were all locked together anyways. My suggestion was to go +2I 0E with the number being only 2 from R cams, but timing is off 1/16 inch towards front of car at crank pulley with gears lines touching, I figure this was due to the machining of both mating surfaces of block deck and cylinder head.
My luck Im wrong.
And also just us being in a hurry

spoon93

Opinions??

spoon93

So I walked out today And just turned the motor over and it started and idled for about 10 seconds gucking it no throttle then just turned right off pulled plugs and there was oil on them but I beleve it's the oil my buddy put there so while we wer cranking it this whole time it wouldn't mess up the cylinder walls

Mechanatech

That motor will never start with wet plugs, cleaning may or may not help. Just pick up some cheapies from the parts store to make sure the plugs are not the problem.

TheShodan

iTrader: (14)

Current sheet for Buddy Club IVs

hondasdohc

Are you using a chipped p30 or just a stock one cause sometimes they won't start without having a chipped ecu especially if you have 11:1 compression and you have cams. And how much was milled off the head and block? that can put timing off by a little.

spoon93

Yes the p30 is stock and there was little milled from both not too much

hondasdohc

Well if the mill was within specs timing should be good but i'm sure the p30 looks for a knock sensor. I mean even though it turned on recently and turned off might be due to the fuel map of the p30. I know the knock sensor would make it run on limp mode so that should not be the problem.

hondasdohc

Oh and how about the stupid main relay have you had the car sit for a little those main relays be playing with you.