Our Community is over 1 Million Strong. Join Us.

Carnivore Diet for Dogs

AIR DRIED BEEF DOG FOOD

2g to 1g head swap, won't start any ideas??


rick_blue_accor
10-24-2007, 09:28 PM
I have a 96 Mitsubishi eclipse GST. I just recently finished building up my 4g63 block and swapped out my original 2g head with a 1g head because of its bigger ports. I've built this motor up befor no problems but i used original parts, with this head swap its nothing but problem after problem! And at this point i am stumped!:banghead: The car just won't start, at first we thought it was because we didn't have a CAS so we hooked up one from a 1g, still won't start. So we did a compression test everything read out perfect, then we checked to see if we were getting sparks and we were in cyl.3 &2 and no fuel in cyl.4 &3. So we flipped our Cam Angle Sensor around and checked our crank sensor which was rubbin a lil bit we fixed that and we got all our spark and fuel but still won't start! What next?? Any ideas??
We have picture and a video but I don't know how to post them but i can send them through email.
thank you

TalonEclipseMixGsx
10-24-2007, 10:41 PM
Not sure seeing as I've never done it. But I did a quick search and found this on RRE's website. Hope it helps and welcome to AF.

http://www.roadraceengineering.com/1g2gheadswaptechtip.htm

rick_blue_accor
10-25-2007, 01:56 PM
hey thank you but I have already checked out that site and I'm still trying to figure out whats wrong. But thank you for your help i appreciate it

rick_blue_accor
10-25-2007, 04:52 PM
hay do you know if the crank sensor is tuching the plate if that wold cause it to not start or any ideas wold help

4g63gst20
10-25-2007, 07:02 PM
do 96's use a cam sensor by the cam gears? one day i forgot to hook it up and it wouldnt start, but mine is 95.

rick_blue_accor
10-25-2007, 09:40 PM
Yup it sure does but the 91 head does not have holes for that sensor so we are using the 91 sensor that goes on the other side. http://C:\Documents and Settings\ricky\My Documents\My Pictures\broking head\DCP_0001.jpg

rick_blue_accor
10-25-2007, 09:46 PM
sorry i don't know how to post on pictures yet but i can send you a pic through email we got the sensor wired up to the 2g ecu harness and we got a japanese expert and he is telling us that if there is no oil going through cams it will not start so we took off the valve cover and cranked it and I watched and there was no oil squirting up so we took off the oil pump to examine it and so far it looks good. Well it just might be the sensor plate for the crank because it is kinda bent, expert also said if plate touches it won't start. Be good to hear from you guys whenever and hope to hear more ideas, anything is helpful everything is needed lol I THOUGHT IT WAS SUPPOSE TO JUST GO RIGHT ON lol well tommorrow is another day and 2nd week of trying to get it running. Nothing is wrong with the block its ran before it has to be the head.

4g63gst20
10-25-2007, 10:09 PM
ok, i forgot about the holes on the 91 head, i'm using a 97 head(this have the sensor on the other side of the cam) and this 97 head had holes for my cam angle sensor. that's why i thought the 91 would have it.

tfoti
10-25-2007, 10:32 PM
I think your "expert" led you way off path about the no oil no start thing.

rick_blue_accor
10-25-2007, 11:58 PM
kool thank youfore that i dont questen him becus hes relly good and weth bowth of us and all of you we shold get it runig i hope. i dont wont to go back to 2g i got two of them now will hes cinda a export lol hes my fothere and law hes a good mechanic we are tring evey theng me him and my girl she usually writes these will i gese the head gust wont work or will it . :{ man we all are stumpt... no idels it trys to start then like it gets stuck and dies and gos again and never starts completely

rick_blue_accor
10-26-2007, 01:25 AM
ok here are some pictures of my first rebuild. I'll get some new pictures on tommorrow of my broken head and a video of what my car is doing and some more pics of the damages and reasons why i had to rebuild it again. I think all you have to do is go to www.myspace.com/mitsubishiman5 (http://www.myspace.com/mitsubishiman5)

SilvrEclipse
10-26-2007, 12:15 PM
kool thank youfore that i dont questen him becus hes relly good and weth bowth of us and all of you we shold get it runig i hope. i dont wont to go back to 2g i got two of them now will hes cinda a export lol hes my fothere and law hes a good mechanic we are tring evey theng me him and my girl she usually writes these will i gese the head gust wont work or will it . :{ man we all are stumpt... no idels it trys to start then like it gets stuck and dies and gos again and never starts completely

What in the hell does this mean?? None of your other posts are typed this bad, what happened to this one??

defiancy
10-26-2007, 12:27 PM
So you did a rebuild and put the 1g head on at the same time?

You said there was no oil on the head, Did you prime the system before you tried to start it. Also did you lube the head up before you tried to start it?

rick_blue_accor
10-26-2007, 01:04 PM
yes i did lube and no i did not prime the system how do you do that and no i rebuilt the block and not the head and then i put the stock head on raced it fore about 1week and then bam smoke i blew a valve guide and messed up me new piston and so i bought a 1g 6bot block but no idea if it whas cracked or not . but i had the head checked and it whas good see i am on a major budget and im well over it now ok . thay wanted 50$ to pressure and clean the block will how do you prime the block ill take pic of the head and piston and post them in my space and cardomain ok thank you for your help

rick_blue_accor
10-26-2007, 01:13 PM
ooo ya i also put this is going to be weird i put the 1g rods in this time its stronger maybe more boost sam 2g piston to make up for lag time. and now i want the 1g head and make up for the no top speed so maybe now i can beat that srt4 in town now i had him in the beginning and third gear he crept up on me and beat me by 1/2 a car but i beat the new si :} not the one i wanted though i wanted the srt4 ok thanks for that help im going to go try some more

rick_blue_accor
10-26-2007, 01:17 PM
im planing on building the 6 bolt i have up with rods and everything but thats money and how do you do that while its in the car imean id have to take it out all the time so just build it first in case you are wondering well here i go ill be back later thanks

SilvrEclipse
10-26-2007, 01:29 PM
To prime the motor disconnect the coil pack and turn the motor over for a few seconds. This will prime the oil pump so wont get a dry start up.

defiancy
10-26-2007, 04:28 PM
I'm not trying to insult you or anything, but are you sure you set the timing correctly on the head before you installed it?

Just trying to narrow down the choices.

rick_blue_accor
10-26-2007, 08:15 PM
no insolt but yes i did we chekt and trepol chet it sarry cant spell :{ good lol ok ill do that prim now gust got out of a enterviue i thenk the metol crank plat was tuching and
will ill find out in a min k be rite back thank fore the help

rick_blue_accor
10-26-2007, 08:51 PM
The sensor for the crank is magnatized and there is a thin metal plate that is located between the balance shaft gear and the timing belt gear:licka: ha ha we eliminated the balance shaft. well back to subject that little metal plate was bent slightly we straightened it out and are about to put it back on :rolleyes: oh ya we got the oil pump housing and oil pan back on also
I've come to understand that if that little metal plate touches the sensor it will reverse or stop all signals so we straightened it out and hoping that is all it is.
Oh ya we also put lol that oil pump gasket on too, last time we just used silicone no leaks but doubt the pressure was the same. well were gonna go give this plate a try, wish me luck:evillol:

rick_blue_accor
10-26-2007, 11:06 PM
ok another :banghead: dangit ok well heres a question! with all the extra friction of no oil. will that cause it not to start .
ok my point is. and i got a pic. ok you know where the oil filter connects to the block right. well is oil suppose to squirt out of there if it is taken off and you crank it over. there is air but no oil, and i know that on a nissan if you for get the oil filter. it will squirt out. but not here! does it mean something. well no oil any where why would that be? dam it all! that mechinist better of cleaned my block good that basterd! there is no oil going through!
before my head swap it worked good. huuuuum any suggestions. open for ideas http://www.myspace.com/mitsubishiman5

rick_blue_accor
10-27-2007, 02:21 AM
ok. took alot of work but we made a better website that you can view without being a member. I'd recommend you check it out to see where I am along this build. look in the 4g63 album, while your at it check out my other rides that were SUCCESSFUL rebuilds by me
www.freewebs.com/mitsubishiman5 (http://www.freewebs.com/mitsubishiman5)/

rick_blue_accor
10-29-2007, 09:20 PM
ok we got oil ay we change the gears in the pump and new gasket and sealed the pump housing and wa-la! we got oil flow ya

rick_blue_accor
10-29-2007, 09:26 PM
but still no start i think it is the sensor the CAS (cam angle sensor) ok how do i know that. well i had my wife crank it while i checked it out. and i had a weird feeling that it was not working so i unplugged it and the same exact thing was still happening so . im going to take the head to the welder shop and have them weld (build up) the sensor location and drill and tap and then it should start wish me luck thank you all

rick_blue_accor
11-03-2007, 12:34 AM
ok will i broke down and took off the head and welded on some aluminum and now it started but only two cylinders are running and i think it is the spark resistor so tommorow im gonna try a new one

Add your comment to this topic!