2002 corolla engine issue!

[evil]

Hii Guys.
I have a question regarding the engine in my 2002 corolla at 170K.
There are a number of problems i am having with my engine which are.
My lifters are loud till the engine warms up, I hear knocking noise on high rpm specially on a hot day and i also hear some ticking noise after a long drive if i let my engine idle. I was suggested 2 solutions regarding this
1. To rebuild my engine
2. To get another engine with a lower milage on it.
I am thinking of doing one of these once i reach 200K but unsure waht will be the best way to go. As both jobs are expensive and requires a highly qualified tech to do so.
Can any one suggest what is the best way to go forth!! option 1 or 2 or another option if there is one!.
Ur opinions will be greatly appreciated.
Thank You

[Milky]

Originally Posted by evil

Hii Guys.
I have a question regarding the engine in my 2002 corolla at 170K.
There are a number of problems i am having with my engine which are.
My lifters are loud till the engine warms up, I hear knocking noise on high rpm specially on a hot day and i also hear some ticking noise after a long drive if i let my engine idle. I was suggested 2 solutions regarding this
1. To rebuild my engine
2. To get another engine with a lower milage on it.
I am thinking of doing one of these once i reach 200K but unsure waht will be the best way to go. As both jobs are expensive and requires a highly qualified tech to do so.
Can any one suggest what is the best way to go forth!! option 1 or 2 or another option if there is one!.
Ur opinions will be greatly appreciated.
Thank You

rebuild. in the end, it is the better of the 2 choices. provided that minimal machine works is needed. plus it gives you a chance to correct problems like oil consumption, and modify the engine to your liking. you end up with a fresh 0 mile engine, where as a engine swap still ends up with a used engine that could have problems. such as the aforementioned oil consumption.

if it was my car, and i wanted to keep it stock as possible (never happens) i would do a rebuild, but would use the celica/mr2 head and intake manifold/ throttle body. new celica gt pistons (03-05) w/ rings. MWR rod/main/thrust bearings. oem toyota gaskets. arp head/main studs. MWR valve stem seals.

majority of those parts are factory upgrades to our corolla 1zz. the engine would have a wee bit more power, but more importantly would not have any problems of burning valves, leaking valve stem seals, or stuck piston rings causing massive oil consumption.

to sum it up rebuild > used engine swap

[evil]

Thanks for your reply Milky.
So if i am take it to my dealer ship and tell them that i want certain parts to be Celica's just as u mentioned would they do that or will they likely to say its not stock so cannot be done.

[Milky]

Originally Posted by evil

Thanks for your reply Milky.
So if i am take it to my dealer ship and tell them that i want certain parts to be Celica's just as u mentioned would they do that or will they likely to say its not stock so cannot be done.

if they would even consider that, they would charge you an ungodly amount for the parts. but more than likely they would tell you its not stock, and cant be done, or wont interchange (bs).

i guess you were asking about taking it to the stealership because you have never done a engine rebuild before? its not terribly hard. if you can tear down an engine, you can put it back together. just take the block to a machine shop and have them do the honing on the cylinders and check the parts out to make sure there good. i have done many engine rebuild, on many different engines. its an excellent learning experiance. but i would recommend having a factory service manual. and a camera to take pics during the tear down, and zip lock baggies. bag and tag every bolt or nut that comes off the engine. ex: all the valve cover bolts in one bag, timing cover in another, water pump in another, etc. that way when you go to put it back together you know those bolts are going back where they came from. just rebuild the engine while your still driving the car, then when your ready, its a simple engine swap. you said you wanted to swap at 200k. well 30k is about a years worth of driving for most people. that plenty of time to rebuild an engine.

[Danimal7]

Originally Posted by Milky

if it was my car, and i wanted to keep it stock as possible (never happens) i would do a rebuild, but would use the celica/mr2 head and intake manifold/ throttle body. new celica gt pistons (03-05) w/ rings. MWR rod/main/thrust bearings. oem toyota gaskets. arp head/main studs. MWR valve stem seals.

Just curious, what pushed you toward that particular setup?

[REN69]

I'm pretty sure the difference between the 1ZZFE in the Celica and the Corolla was the ECUs, otherwise everything is the same.

[Bitter]

Originally Posted by REN69

I'm pretty sure the difference between the 1ZZFE in the Celica and the Corolla was the ECUs, otherwise everything is the same.

kind of, the 1ZZ-FED in the celica and mr-2 has slightly larger valves and a different ECM programming to account for the more airflow.

[Milky]

Originally Posted by Danimal7

Just curious, what pushed you toward that particular setup?

its the best of the oem parts. it would be all stock toyota parts sans the few parts, but would still give a bit more performance than a stock 98-02 1zz engine rebuild would.

also there are alot of differences between the celica and corolla 1zz. the head for the celica is milled for larger valves, the pistons also have larger oil drain holes and a slight dome in the center, the intake manifold has shorter runners and a larger plenum. along with a 60-65mm throttle body ( got to go remeasure mine), the mwr bearing are just waaay better than the oem aluminum bearings. the mwr will take more abuse, thus making the engine a bit more reliable. i would still run an oil cooler tho. oem toyota gaskets are just proven to be excellent. mwr valve stem seals because they are a better material than the oem ones. they seal better and will last longer. the celica also has a cast rod, where as the corolla actually got the better forged rod... figure that one out?

our 98-02 intake manifold uses 24.5in long runners. this to make the engine more efficent at breathing at lower rpm, about 1500rpm to be exact, which is good for fuel economy, but hurts performance. where as the shorter runners of the celica are tuned to be more sporty. they are more effiecent at a higher rpm. about 3500 if i remember correctly, its been a while since i did the math. the larger plenum also goes to increase proper air distribution amongst the cylinders and increase throttle response. better air distribution leads to less wasted fuel by one cylinder running slightly richer. our corollas also barely breath thru the tiny as hell 50mm throttle body. our head drastically out flows the tiny throttle body. this is why the engine seems to choke at higher rpm. combined with the restrictive intake manifold, and you have one engine that will not respond to any form of go fast modification.

the reason for the arp bolts, is toyota uses a factory stretch bolt. which means there use once and throw away. while this is good because it ensures that the head and what not receive the proper torque, its bad because the bolts stretch and should not be reused because they will not achieve the same load as before. nothing against toyota, but i dont like having to buy a 50+ dollar head bolt kit each time i tear an engine down. every 4a i ever rebuilt got studs. stock rebuild or not. its also the reason when you torque down a toyota head, the sequence is something like 23ft-lbs then 90* followed by another 90*.

[evil]

Thankz for all ur feed back guys.. I will looking into rebuilding the engine.. Now i just have to fond someone that can do that at a good price and knows waht he is doing.