Stuck lifter?

[HPF Chrisk]

i know this is gonig to be a lil vague but i am going to describe it the best i can till i can get a video with sound, my car has been sitting for the last month and periodicly i go out side and start it, ususally every other day, and sometimes i drive it just to make sure everything works, i have a dd and i am trying to save up to build the 240, well the other day i fired it up and it sounded normal and i went inside and made something to eat and it ran fine, the next day i fired it up and it had a faint tick so i shut it off and left it, well today i started it to back it out of the garage and the tick is very loud, could it be a seized or stuck lifter? could dirt have gone in the inlet hold of the lifter and it cant get any oil? exhasut leak? i am just trying to get ideas so i can go home and daignose it tonight, i dont think its coming from the bottom end. pretty sure its in the top end. what do you guys think?

[nizmo zilvia]

I know this is common with a swap. Motors been sitting for so long and stuff tends to stop working for a while. I really dont know the situation of you car / swap or how long you had it, but why not let it run and drive it? Mine took 3 days to go away.

[HPF Chrisk]

i drove the car since july, it was running great but here in oregon where i live they like to spray a ton of de icer on the roads and it eats everything. so i decided to get a dd and try to build it more into a track car, but i havent had money yet since i just paid for the dd.

[nizmo zilvia]

I see... Maybe pull the head and see if theres any damage done? Thats all I can think of. I mean I haven't had this experience with my car so can't exactly say what to do. Im sure someone here can chim in and help you though.

[HPF Chrisk]

I really dont want to have to pull the head yet, i might just put some sea foam in it and then change the oil right away and see maybe if it will clean it out, i am going to get a steath ascoap and start it up and figure out exactly where its coming from first.

[Darius]

Do you know what your oil pressure is? It is odd for one lifter to get gummed up and tick but I guess it is possible. Are you sure it is only one?

[HPF Chrisk]

it was only one, last night i listend to it with a stethascoap and everything was fine, the tick went away, i am gonig to not run it till i get my oil pressure gauge installed this weekend. it really wasnt that loud, it was just me cause i had 2 other ppl listen to it and they couldnt really hear it, could have just been the exhaust leak, idk but i want to check everything out to be safe

[nizmo zilvia]

I double other people will know what you are talking about unless they know these kind of problems.

[driftingmy240sx]

the rb motors dont have hydraulic lifters they use shimmed "pucks". if its valve train noise it may be a valve lash issue.

[Darius]

Might want to review the FSM a little more.

The RB20 and 25 both have hydraulic lifters. The RB25NEO and RB26 have solid lifters.

[ryan15]

I would sea foam it, change the oil, and only use OEM filters, because I used mobile 1 oil filter once and it made one of my lifters tick pretty loud. I think after oem oil filters are better at holding pressure in the head.

Ryan

[Joe]

just warm it up to normal temp (OIL temp, NOT coolant temp.), make sure the noise doesnt get worse, drive it around the block and listen again.

[HPF Chrisk]

once i get my oil pressure gauge installed i will warm it up and drive it, i will probably sea foam it to, i sea foamed my single cam and noticed a big diference but wasnt sure if i wanted to do it to the rb, what is typical oil pressure for a s1 rb25?

[driftingmy240sx]

so let me get this straight having had the head apart on my rb25 and finding solid valve shims means i have a neo motor and not a s2 like i was told?

[Darius]

mail me a pic and i will tell you for sure. i dont know how you would get a NEO and not know it, but i suppose it is possible.

[driftingmy240sx]

hey Darius heres a few pics of my engine bay

http://i139.photobucket.com/al...6.jpg

http://i139.photobucket.com/al...5.jpg

http://i139.photobucket.com/al...4.jpg

http://i139.photobucket.com/al...2.jpg

i still believe this to be a s2 motor and when i replaced my head gasket it had solid lifters. i know because i removed them to relap my valves and clean the head. any info on this that you may have is greatly apprieciated.

actually looking at a few other posts i may actually have a s1 motor as i have an ignitor set up on the back of the coil pack cover (not seen in pics).

[Darius]

Yeah you definitely have an S1, but you are lucky if you got a motor with solid lifters in it. I'm wondering if someone didn't just swap on a NEO head, but then you'd have different VTC. I am confused.

So when you removed your lifters, they had shims underneath them? Or do you think you have solid lifters because you couldn't compress them?

[Joe]

hey Darius heres a few pics of my engine bay

http://i139.photobucket.com/al...6.jpg

http://i139.photobucket.com/al...5.jpg

http://i139.photobucket.com/al...4.jpg

http://i139.photobucket.com/al...2.jpg

i still believe this to be a s2 motor and when i replaced my head gasket it had solid lifters. i know because i removed them to relap my valves and clean the head. any info on this that you may have is greatly apprieciated.

actually looking at a few other posts i may actually have a s1 motor as i have an ignitor set up on the back of the coil pack cover (not seen in pics).

thats a S1

igniter = S1

that style TPS =s1

[ryan15]

valve covers look like NEO to me maybe you have a neo head... but honestly I dont know much difference but the valve covers def look like a GO!

[driftingmy240sx]

when i disassembled the head for cleaning i took out "bucket" style lifters (if you flipped mthem over the would hold fluids like a cup). being a master nissan tech i have rebuilt a fair amount of usdm heads at my job and all the lifters ike these on usdm engines are solid lifters. they have a measurement stamped on the underside of them that is the measured hieght of the shimmed lifter (we have a formula that you use to select a new lifter or possible reuse it). i didnot inspect the lifrers from the rb for any stampings because the head was not machined and no new lifters would be needed. so possibly they are hydraulic but from my exerience they appear to be solid lifters.

if some one has pictures of the different rb lifters i can point out which i have.

[Darius]

This has pics of the VG30 lifters but they look identical to the RB25 and I think they might be the same PN?? I can't remember for sure.

http://twinturbo.net/net/viewm...rch=3

[driftingmy240sx]

that appears to be the same setup that i have. i guess i just didn't look close enough, as nissan's solid liters in there usdm cars look very much like those also. thanks for all the info and i am glad i learned something new.