i have a 92 240sx hacth,completely stock(just got it) there is a crazy ticking noise coming from the engine,it doesnt do it at idle but does do it when you get on it or rev it up it really gets loud after 2600 rpm,it sounds like a vavle tap but im not sure, is there anything else it could be,its really annoing

thanks

 

Upper timing chain guide probably, take off your valve cover and take it out, its not needed.

 

ight ill give it a try and see what happens

 

i removed the chain guide, the cover that went on the outside had like a gasket built in to it, when i took it off it feel apart,should i use some kind of RV stuff for a seal?

 

yea just get that gasket sealer. hopfully just that top guide will make it stop rattling. i took out the top one and the right one and my car stopped rattling. your screwed if the bottom one rattles cuz then you have to pull the oil pan and take of the front cover and replace em, good luck with it tho.

 

ight thanks

 

Does it click louder when the gears change (1st to 2nd)?
if so I would check rod bearings. I hope its not the bearings but until you check it out i would not drive it. driving with bad rod bearings could tear up your crankshaft.

 

ok so turns out after we put the thing togeather the car still makes the ticking noise.i had my neighbor whow is a bmw mechanic come over and take a look,he thinks its a problem with the wrist pin,,and the noise im hearing is the piston slappin around inside the cylinder wall. it only ticks at 2500rpm and continues from there. the car is driveable but i think i might just park it, any suggestions on what to do. i think it may be time for a swap.

 

did you check to see if the bottom guides are good? one of them could of broke and the chain is just being smacked around.

 

if youcould get a recording of the sound, we could tell you more, right now we are just going off common problems, ho many miles does the motor have on it, how hard was it driven, try to get a video.

 

yeah i dogbt its the lower chain guide, i can try and get you a recording idk , the car has 150 thousand iam the third owner i no i didnt really beat on it at all.i just htink its from old age.

 

if its only got 150K it shouldnt be rod knock, or anything major unless the previous owners didnt maintain it, I've seen KAs with over 300K still running stong lol. Hope its nothing serious, If it is, they are pretty cheap to rebuild.

 

i dont no if i feel like takin it apart to find out out its somethin major ha idk, how much do you think it would be to rebuild it?

 

im rebulding mine, i got the rings for 70, rod and crank bearings for about 110 for all of them, overhaul gasket set for 200, I didnt have to get pistons and stuff tho, i think the pistons are like 70 a peice and they come with rings, wrist pin and snap rings. and head bolts wer 38. You could prolly get a used one for alot less but you never know the condition, or how it was treated. i would say rebuilding would cost about 500, all that stuff up there is $418, plus, i prolly mised some stuff.

 

yeah i dont know, 500 bucks i think im gonna just drive my car till it goes and get a beater car and work on putting a swap in my 240