ok heres a brief description of my situation I got a 98 GSR having missfire issues (guessing valves are not adjusted right but head needs resurfing anyways) and my friend is offering me his stock GSR head and what I cant figure out is whats needed for the Type R Valvetrain with type R cams whats really confusing the hell out of me is what exactly DO I NEED like when I look up type R cams supposely all u need is the intake cam and same thing for the valves all I wanna know is this true and what else do I need ???

Thanx in advance

 

Not being a dick, but just out of curosity did you try searching?

 

Did you even try to fix the misfire or diagnose whats causing it.???

 

x2 basic tune up? check dizzy

 

LOL, love from Jimmy.

An ITR valvetrain consist of dual valve springs on both intake and exhaust side. While the gsr only has dual valve springs on the intake side. And yes they are interchangeable along with the valves and retainers.

You can run ITR cams on the stock gsr valvetrain. But the stock ITR valvetrain would be better or in other words highly recommended by most people. I myself have been running 00 ITR cams on my stock gsr valvetrain for nearly 3 years now and take it to 8500rpm whenever i beat on it.

 

you might also want to consider getting a more agressive cam...if you are gonna go through all the trouble of up grading everything. Done some research myself on this seem to be the general opinion that while the type r is a upgrade from a gsr cam, you would be better off getting something a little more agressive

 

This is the first logical step.

This answers the valvetrain question.

 

your misfire has nothing to do with your valve train so buying the other head would be pointless.

 

x2 check the dizzy and spark wires and injector conections. save the money and get some sk2 cams dep on your setup. if you dont plan to tune the motor cams are pointless just swap the ITR valvetrain and cams if your not gonna dyno tune the motor and or have suporting mods for aftermarket cams!

 

And Yes I have done searching but couldnt really get a clear anwser trust me I rather be on google for hours before I actually bother to make a topic So I understand what yaw mean I rather go nuts before asking yaw either Im might get flamed or carried but I thank yaw for not really those 2

but the whole missfire thing is just somthing I can't seem to fix it all started when one of my valves had cracked and I think my dads mechanic just replaced that one valve and did not have my head re surfaced because now I get a Coolant with oil leak from under the Vtec solenoid and yes I have replaced both vtec solenoid gaskets and cam seal only one I have not done is dizzy seal but then where else would coolant leak from?? and as far as tune up I have done it like twice and replaced my injectors and replaced charcol canister and replaced both o2 sensors and all 4 injectos so my last guess is somthing is goin on with cylinder 1 an 3 the spark plugs always come out really burnt while 2&4 come out normal wear Im guessing there not adjusted right and yes i haved checked the codes and I get a **** load of them like random multiple missfire,Cylinder1 missfire and 2 and some p0420(need to replace cat) so yea I have pretty much done the majority of things people would tell me to check soo yea all I can say is DAMN OBD2!!!!! need to pass emissions!

 

Run a compression test first. They valves may not be adjusted correctly, which can cause a low RPM misfire. What CEL codes do you see? I shall guess that 71 and 73 are listed.

 

I be geting p1399,p0301,p0303,p0172 yea somthing around there

 

P0301 and P0303 are misfires in cylinders 1 and 3. Check your valve adjustment and run a compression test. Does this misfire stop at higher RPM? One would suspect that a faulty ignition would cause misfires in all cylinders.

 

adjust the valve lash correctly, i bet he replaced the valve and didint even adjust the valve after!

 

yea i have the same problem with the random misfire and mine first started a few months back i was getting the po420(b/o cat. code) . Dont know if there is any connection between having a bad cat. and the random misfire . At least with my situation i seem to get the misfire when my engine is warmed up and i start the car right away , but if i hold the key in the "on" position for a few seconds and then start it, i dont get the misfire fault. I think im leaning out and its causing a misfire. My gsr was tuned on a itr ecu with a apexi neo but i stopped using the p73 ecu and when back to the p72 ,plus my int.cam is advanced 1 degree and exh. retarded 1 degree. In the process of getting a s300 and a cat. and will see if a proper tune takes care of my misfire problem ...if not back to square one lol

 

gsrtom= exactly! thats one thing I forgot to mention I can never get in my car and just turn the key an crank it cause If I do it wont start up right like if it doesnt want to crank like i have to hold the key for another slpit second rather then just Vroom its on so to avoid that I always gotta turn the key to ignition on wait till the fuel pump relay clicks then I can start it up

so to yaw yes most likely my dads mechanic skipped some Important things like resurface my head and go through my valve adjustment is there a special Tool? thats for adjusting the valve and gives u like some measure so u can adjust it to the right spec??

1 more question yaw can the dizzy's timing not set right contribuite to this problem??

 

Many things could have been done incorrectly. the competency of the mechanic is in question. I would check the cam timing. Amazon has a 10mm valve tappet tool for about $13. It makes the adjustment easier.

Your to do list.

1) Check timing belt installation
2) Adjust valves
3) Run compression test

 

I had a mis shift and now im stuck with a misfire. I replaced rotor, cap, wires, sprks and the alternator bolt cuz it shot off when i mi shifted. the belt fipped 180 degrees! the misfire got better but it is still there

 

^^^Most likely bent some valves. Run a leak down test to find out. Or a quicker method would be a simple compression test to see what cylinders if any, you are losing compression out of, then follow up with a leak down test to pin point the problem.

What'd you spin it up to? 12k, 14k?

And wow to the original thread, that sounded like some serious shade tree mechanic stuff going on.