HLA QUESTION AFTER REBUILD

[SUB ZERO CAR FANATIC]

Q45 TECH- I HAVE A QUESTION ABOUT THE LIFTERS,THE FSM SAYS TO PRIME EACH LIFTER IF THEY WERE ON SIDE AT ONE POINT.IM IN THE PROCESS OF PUTTING ENGINE BACK TOGETHER AFTER REBUILD,I PUSHED DOWN ON TIP OF ROCKER ARMS MOST OF THEM CAN BE PUSHED DOWN A LITTLE.FSM STATES IF HLA'S CAN BE PUSHED DOWN MORE THAN 1 MM THEY HAVE AIR IN THEM AND MUST BE REMOVED FOR PRIMING.MY LIFTERS WERE NEVER OUT OF THE HEADS,THE HEADS WERE ON THEIR SIDE A FEW TIMES IM SURE OF,BUT DOES THAT TECHNICALLY MEAN THE LIFTERS WERE ON THEIR SIDE AT ONE POINT?I READ IN SOME OF YOUR POST ABOUT ENGINE NOISE AFTER NEW GUIDES DONE(which i done by the way also) you stated if you do several cold/warm starts the lifters will prime themself.DO YOU THINK I WILL BE OK OR MUST I TAKE OUT HLA'S AND PRIME? ANY HELP OR RECOMMENDATIONS GREATLY APPRECIATED! THANKS, SUBZERO

[Q45tech]

Engine rebuild? What hard items besides chain guides have you replaced with new parts?

[SUB ZERO CAR FANATIC]

Thanks for a quick response.I was worried i wouldnt get through to you for a while and i have got to get this thing together as soon as possible. these are the parts that were replaced on motor: timing chains,guides,tensioners,oilpump chain,sprockets,etc. Let me rephrase rebuild,if your going to take the time to help me i need to start from the beginning i guess. I have a base model 1993 Q45,which i have been restoring for the past 2 years. BUILD DATE=1/93 When i purchased the vehicle it had been setting a while,i paid $600 for the car.The man i bought it from had the nissan dealership here in fairbanks(as we dont have a infiniti dealership here in Alaska) put it on the rack and check it out.They pulled the oil pan and found one of the rod cap bearings spun,worn out.They discovered the oilpan had a hole in the corner of it so it was losing oil and he obviously didnt keep a check on the oil level.Nissan told him it would be $4500-$5200 to have it rebuilt.He didnt want to spend the money to have it fixed and still owed $4000 on the car. long story short i did some work re-modeling the guys house for trade on the car.I got it home with plans on rebuilding the engine.After talking to a few shops here and seeing how expensive and hard it would be to get parts,a local shop refered me to someone local who could order me a low mileage motor for my Q and said id be better off in the long run.so they ordered the engine once i got it here it was to fairbanks alaska total cost was$1400,and the engine was said to have around 30-40k miles on it(from japan) and it would bolt wright in.I didnt know alot about Q45'S at the time,so when it got here i found out it was out of a 94 model .I was told it would work with no modifications,then i found out the CAS was different and my wiring was different and etc. So the place where the engine came from said if id do the labor of swapping the heads from my 93 motor to the 94 motor that would solve everything and they would pay for the Gasket set needed for doing the head swap.So i agreed and thats what i did. i havent had the lifters out of their place but the heads were up on their sides and turned over etc. when the heads were cleaned.my concern is after reading the manual,that the lifters might need to come out to prime them and get air out even though they werent actually out and on their side is this necessary or can i do the several warm/cold starts like you stated in one of the posts? also i have already installed all the new timing parts and put on front engine covers.also when the motor is set to TDC like the manual stated everything seems correct but the CAS ,(i dont think) is in the correct posistion.I have cover off CAS so you can see the opening notch on the rotor looking part that is supposed to align up directly to the left with the black plastic part in the 9:00 posistion. I THINK ITS SUPPOSED TO POINT TO 9:00?? BUT MINE IS POINTING TO ABOUT 10 or 11:00! AM I CORRECT? CAN I LOOSEN CAS SCREWS AND TURN IT SO THE NOTCH POINTS AT 9:00?? PLEASE HELP. MUCH APPRECIATED!!

[Q45tech]

The signals from the 94 CAS can be adapted to work with the 93 ecu.I've never done it but you would need pieces of 2 harnesses and the pigtail from a 90-93 Cas and a portion of a 1994-96 Q engine harness.

The 94 has a single connector vs the 2 for 90-93 CAS. the CAS signals are the same just on different connectors.

To remove and reinstall HLA one must heat the heads in a LARGE HOT OIL BATH per instructions in FSM.

[SUB ZERO CAR FANATIC]

thanks for telling me how to do it,but im still not quite sure you have answered my main question. DO I HAVE TO TAKE OUT LIFTERS TO BLEED AIR(IF THERE IS AIR IN THEM,NOT POSOTIVE) FROM THEM OR CAN I DO THE COLD TO WARM START SEVERALTIMES? I SURE HOPE SO. I HAVE ALREADY PUT ON FRONT ENGINE COVERS AND SILICONED. AND MY SECOND IMPORTANT QUESTION IS SHOULD THE NOTCH MARK ON THE CAS ROTOR BE POINTED DIRECTLY AT 9:00 WHEN AT TOP DEAD CENTER? MINE IS POINTING TO ABOUT 10:OO WHEN AT TDC,CAN THE 3 CAS SCREWS BE LOOSENED SO THE CAS CAN BE TURNED COUNTER-CLOCKWISE FROM THE 10:00 POSISTION(WHERE MINE POINTS) TO THE 9:00 POSISTION? SO 1ST.- MUST LIFTERS COME OUT OR CAN I DO COLD/WARM STARTS, 2ND.-SHOULD NOTCH IN CAS ROTOR POINT AT 9:00 WHEN @ TDC, 3RD.-CAN I LOOSEN 3 SCREWS ON CAS & TURN IT COUNTER CLOCK-WISE FROM 10:00 TO 9:00(IF THATS THE POSISTION WHERE THE NOTCH ON CAS HAS TO POINT) THANK YOU VERY MUCH FOR YOUR HELP!!

[maxnix]

First off, PLEASE DON"T SHOUT AT US! Thank you.

The FSM has the details on rehabbing the HLA in an oil bath. Same for the postioning of the CAS.

On a cold start with functioning HLA, we remove the fuel pump fuse and let the engine turn over for 15 seconds or so to prime them.

[Q451990]

I think at this point, since you have already assembled everything, I would just try it and see what happens. I don't think you will do any damage from flat HLAs unless you run it in that condition for a long time.

Unfortunately I don't have much experience with the CAS, so I can't be much help there.

Good luck!

Heath

[SUB ZERO CAR FANATIC]

thanks alot HEATH,i appreciate the input, your always courteous and helpful to others.Im new here on nico i enjoy it alot,this is my first time asking for help about a topic.Im not sure what i did to make you think i was yelling brian,but i can assure you im not.Just trying to ask for a little help and advice,if its in my typing somehow its not meant that way,im not very computer illiterate so im sorry,it wasnt intended to look like i was yelling.I appreciate you guys help and input,i think nico is the best website by far i have ever seen anywhere for help,parts,discussions,etc.I try to log in at least 1 a day,very enjoyable place,thanks to people like you all. I'll check the fsm maybe i overlooked the section on CAS like your talking about brian.So i guess as a general rule of thumb if you can push down on HLA end of rocker-arm at all then you should prime them,even though they were never out of their pocket and layed on their side.? thanks

[Q451990]

"ALL CAPS" is known as yelling in the internet world... weird huh.

Anyhow, I think the reason you're not getting a firm answer on the HLA's is that no one here really knows for sure. For the most part Q45Tech's shop does engine swaps when one is damaged that badly, so having the heads off of the engine and laying on their side probably hasn't happened.

I still think I would just start it up and see what happens once you get the CAS deal figured out...

Heath