General Mechanical

just a quick question guys, which efi setup 4k or 7k has the greatest distance from the strut tower? cheers for any info

Hi there, Does anybody know if there is enough meat in a 4K block to bore it out to take 5K 80.5mm pistons? I know you can go to 79mm no problem. This would save me having to carve up a block to see. Also have a supercharger that I was going to try a suck through system on, has anybody tried this? Thanks Dobsy

hi guys i was getting my car ready too sell , i just added a 40doce Weber and a few other things, so my problem is i went to start her and it sounded weird and began to flood its self cut a long story short the timing chain pulley that attaches to the cam was lose and sheared the 10mm neck off the end of the cam and snapped the key way , my quire is while the car was running for a few short seconds will it have done damage to the valves and push-rods or anything else

who else in brissy does cam grinds??? or gold coast

Hi, i have been looking into doing a cam shaft replacement on my standard 4k but have very limited engine knowledge. Would anyone have a guide or a walkthrough on replacing a cam in a 4k and would anyone be able to tell me what i need to buy before i even start removing the origional one. ( i am going up to a mild grinded cam ) thanks

Ok I need some help guys I've got a ke70 which is standard at the mo but with in the next few weeks it's going to get some work done to it, some 4:2:1 xtractors and a 2" xshaust my next mod is a cam I've been doing a bit of reading and sent a few emails, wade cam reackon there 104 profile and I'm left with the 104 and 112 profile from tighe cam, I had a 2t with a grinded cam in it its power band would start around the 3500-3800rpm range and would pull hard till about the 7000rpm range which I realy liked and it had a nice lumpy idel which is realy what I'm after, so basicly out if the three which is going to be similar to my 2t cam as I realy liked it and wouldn't mind…

hey i was just viewing some of the old threads..one was about having your cam reground, i don't understand that concept fully..wont they work in reverse, taking metal away from your cam ? also do u need any other modifications if u have your cam reground ??

I have been building an engine for my sons first car (KE20) so far I have balanced the 4K bottom end, 3k big port head, factory twin carbies, extractors and a 2 inch sports exhaust, with a 5 speed, the car will be spending a lot of time on the highway so 2500rpm upwards will be the starting point and hopefully it wont be going past 7000rpm to often, but boys being boys he'll give it his best shot, but does anyone out there have any good ideas of what profile to use of where to find out. :D :) :) :hmm: :hmm: :hmm:

I'm recently having problems with my single carb on my 4k. I recently replaced the cam in the engine with a fast road cam and it was going fine. I got the idle tuned so it was just strugling to stay alive and the car was running fine. I then went and bought myself a 3k-b twin carb which i used to replace my single carb but with huge problems. 1 of the carbs jets wasnt working to i cleaned it out but still the car sounded horrible like it wasnt running on all 4 cylinders so i decided to go back to my single carb. I hooked the carb up as usual but when i started it it didnt seem to run as before. The rev's with my foot flat on the accelerator seemed to just be at 2000rpm. t…

Hi guys I'm new to the group and in desperate need of help. I have a 4k Corolla motor from a ke 70. If I drive the car for about 25km's driving at 80kph and turn the car off. If I go to start it, it won't start. It will wind to the point where it loses battery power. All gaskets have been done, engine and radiator flushed,new radiator hoses,new coil,new fuel pump, points and condenser done and spark plugs checked. If I wait for the car to cool down for about an hour for everything to cool down it will start. This has been going on for about nine months now and no one can tell me what to do to fix it. The car has been to auto electricians, to engine rebuilders to mechan…

hey guys well the following is goin on with the 4k at the moment ... Its got a stock carby on it, its pretty clean, looked like it had a rebuild recently ... It doesn't normally idle on flat ground, just idles smooth at about 1000rpm then drops down to 700ish then conks out. When I'm parked in my driveway as i open the gate, the car will rev fine but at like 1200 rpm ... Sometimes when i take a corner at the lights or whatever a bit quick the car drops out a bit then picks up, as though it was starved of fuel temporarily ... Am i right to assume the float level is too low? I don't suppose that this could be why I'm getting 440ks off 50L :) Thanks for…

i read somewhere that the original carby on the 4k it has two butterflies and one opens when u push down the accelerator and the other opens at high speed if thats true is there a way to make that both open at the same time? would this mean that i would have more power at lower rpm thanks

can i have some help on finding a right size carby to upgrade to on my 4k engine

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Hey does any one know what is to much compression for a 4K? My new engine is pinging too much when set to correct timing. If I set timing to TDC it is ok. Engine guy says it is about 13:1 compression ratio. Do I need to run AVGAS? Where can I get it from? Thanks B-Rad

Small End Pin Size - Big End Tunnel Size - Centre to Centre - does anyone know the sizes of these for the 4k engine?

4k ksev keeps cooking after recent replacement of water pump but have no idea why anyone drove this road before? and yes has coolant

My 4K-U has a double crankshaft pulley. All one piece. The rear pulley is slightly larger than the front one. The rear one drives the usual water pump & alternator. Question ? What was the front one used for. Did some corolla's with 4K-Us have power steering or maybe airconditioning ? Would be interested to know. :D

hey all just got a little problemm with my 4k which is becoming very anoying, evry time i turn the key off the engine keeps trying to run on me (detonating) and the temp guage never goes past half way. I'm baffled to what could be causing it to detonate ,could it be something to do with the ignition system or the fuel? any help apreciated . cheers -jake :dance:

hey guys just wondering if a electronic dizzy of a 4k would go onto a 5k?? i had a look around and couldent find anything on the topic?? thanks.

Okay so My 4k dies out every time I do the smallest skid When I open up the engine bay I can't see any fuel in the lines some I suck some trough to get it gaining again but I want to have it working right I've replaced the fuel lines and filter in the engine bay Any ideas on what I is Fuel pump maybe ?? How do I check of the fuel pump is working ?? Upgrade fuel pump ?? (Ke55)

hi all. i currently have a 5k with ported head and a mild cam with a 4k efi setup. and its using a fair amount of fuel and wont idle below 2000 rpm. i have been told by a mechanic that it could be the injectors causing the fuel economy problem and i have also been told by an auto elec that its could be the ecu. as far as i know (from talking to the previous owner) its running stock injectors and stock ecu, and was imported. Previous owner never had a problem with fuel economy, but the car sat for a couple years before i bought it. research tells me that the injectors and ecu are a must upgrade parts. my questions to you are: does running stock ecu and inject…

Hey Guy's, Picked up a reconditioned (new bushes etc.) 4K electronic dizzy on eBay the other day for a song ! I'm as happy as a pig in a mud bath ! Question, There are two wires that come out of it into a green plug. Do these normally connect to some other ECU module that Toyota fitted to the 4K engines with electronic dizzys, or is there more switching electronics in under the little black cover inside the dizzy, so that the wires directly connect to +ve 12V & & the coil etc ? I've unfortunately never seen a KE55 with an electronic dizzy setup. My Gregory's 184 manual only describes the points dizzy setup & wiring diagram onl…

hey guys i was wondering if any 4k's came out with electronic ignition if so what car were they in??? also what diff ratios would me ke70 5speed have? are there any shorter ratios that will fit in my diff housing??? any one selling 4k extractors please let me know thanks Alex

i have a manual 4k ke55 corolla 1980 model and wanting to put a 5k engine in it. will the manual gearbox fit on to the 5k engine? will the 5k bolt onto the mounts on the corolla? is there any decent diffs that will fit the ke55 with minimal work?

Hey guys my worked 4k aint firing properly on cyl 2. i hav swaped plugs around, got new points and condensor, new leads, checked valve clearances and set timing to 12 degrees btdc. all the other plugs are overrated but no 2 keeps fouling.i am gettin a new dizzy cap and rotor today to. what the shit is going on?

Hey, after ages i finally got around to putting a motor back into my ke55. Now the motor ran fine in the car it was from but in my car it doesnt want to start. It turns over but just backfires out of the carb and doesnt seem to wanna start. I was thinking either vac lines are wrong (but looked at old pics of my motor and they seem the same) or something timing related. Anyone got any ideas? Cheers, Jason

Hi there, I'm new to this page and I'm really needing help! so I have a ke30 with 4k in it. From memory the engine just stopped going a few years back. Iv locked it away and now Iv decided that I wana make it run. Iv charge the battery fully and Iv tried turning it over but all it does is make a click sound. I googled around and figured it might be the starter. Got a new one tested it and still the same. I unbolted the starter and pulled it out so I could see the gears. Left the power and ignition cable connected then I use my jumper cables to earth the starter. Turn my key and the start pops out and spins overrated. When …

Hello people, On my 5K, am planning to run a cast-iron exhaust manifold with the dual-downpipe exit. This has a 3-bolt attachment, whose flange looks just like the one for a Subaru EJ20 (but I don't know if it is the same). Does anyone have a source for the Toyota flange in stainless? Or has anyone made a drawing pattern of it? Having a hell of a time finding the subaru flange dimensions to compare, or even the toyota gasket dimensions. (My van, but not my actual paint job)

Any1 noe the best size of exhaust system 4 my 4k...? what kind of extractor is good...?? how many inch piping is the best...??

I'm just wondering what are some good extractors to get for a 4k. And how much?

Just wondering if anyone would be able to tell me what a set of extractors for a 4K are worth? cheers

Gday guys, Jay here. Complete noobie to this forum so bare with me lmao. I recently brought a dream car of mine, 1980 Kp60 Bugeye starlie. 4k motor with twin choke single carb and Gilmore pullies. pretty standard. But To cut a long story short.... I brought this planning to get it road worthy. It ran bloody well up until after I put a fresh wof/reg on her and did a full service. I changed the motor n filter, gearbox, diff oils, plus coolant and air filter. The fuel pump had a slight weep from the gasket so I took it out, cleaned it up and attempted to repair it with some rtv lol. Then later that night when I was out she started idling quit…

My 4k blew the head gasket so Its a good time to get the head shaved to give it a bit more power how much would you recommend taking off I'm thinking around 20 thou but tell me what you think. :dance:

i put my 4k bp head on my 70 the other day put a new head gasket on and stuff read th wrong tourke specs done it up too tight snapd a head bolt went to start it and its got no compression. so i took the head off again? any help?>

Hey guys I'm leigh,I'm attempting to re-build a 4k turbo injected motor. The motor had standard head bolts in it but they stretched under boost and blew the head gasket. I have been searching for a metal head gasket as the standard seems to blow at 10psi. Does anybody know where I find a metal head gasket? Also has anybody had any luck getting ARP head bolts/studs? They don't stock a kit but ive heard of people using arp bolts in 4ks. Any help would be great. Cheers Leigh

Well i got to change the head gaskeyt on my 4k and just wondering if i jsut undo all the bolts under the rocker cover and it should just leaver off? bloody hasnt been changed in a while one of the bolts snapped :y: so now i gotta get that off

what result will i get if i put a 4k head in 5k block...? I search d but dun understand..... :ban:

hey guys slapping a motor together quckily, basicaly i have a 5k bottom end and a 4k head. i would like to keep my hydro setup i have everything from a 5k head just no head. is it possible to bolt all the 5k rocker gear to the 4k head and bam hydro is go or no. haha and would that make it a high comp, low comp or standard comp motor. taz??

I have just entered the world of Corolla ownership with a KE30 coupe. This will be the first of many questions that I will probably ask as I commence the task of getting the little lady running before starting on giving her a extreme makeover. Question 1 The guy I bought it off told me it was running a 4K head on the 3K motor. Is there any way to confirm that the head I have on the motor is a 4K head and if it is should I switch it back to a 3K head or buy a 4K block i.e which is cheaper?