E30 Zone

Hello guys. Haven't posted here for a while here. Background information: I'm building m20b27 stroker motor for turbo engine target output about 400hp (1 bar of boost). I got stock high compression m20b25 motor and i got m20b27 bottom end for it's crank and rods. I got most turbo parts prepared and ...

very cool. I'm basically doing the same project. I'm kinda stuck on manifold. The only difference being is that i got different manifold, HX35 turbo and I'll use 325i high compression pistons with eta shorter rod to get 8.6:1. besides I got like localy bought 12.9 headbolts, I'm aswell considering 1...

ed325i wrote:
Mops wrote:stock cam will be ok then. ideally 323i cam (longest duration oem cam for m20)
So is the 323 cam better then a 325 cam ?

what is what i 've hear on the internet... severl time in fact. i cant confirm it myself, , but best to check with OEM...

stock cam will be ok then. ideally 323i cam (longest duration oem cam for m20)

thanks for update ant... still i think t3 exhaust housing will be restricting on that engine on 31 psi.... as is the fact that it works well and spools quick to 14 psi... therefore i think it will be ok up to something like 20 psi, then exhaust back pressure will become a major pain (that wont stop ...

well... all thought i'd say it is best to get megasquirt (= $$$), up to about 6-7 psi of boost can be achieved wit motronic, but it does require some mucking around: you would need m30 afm and wideband lambda sensor = $$$ (or some dyno time = $$$) and then you will need probably put some bigger inje...

i dunno... that turbo looks small from the pic (might be just the perspective of the pic). how big is exhaust housing ? if it is 12cm^2 then you will run into problems beyond 400hp... if course you can keep increase boost.... but that will be just driving EGT's sky high and hardly making any extra p...

i would just reuse stock i pistons... then deck the block to achieve desired compression ratio...

oze, depending what you take off. early piston and lates pistons, will be 2mm lower with eta crankd and 130mm rod... thing is that low comp piston is lower in height to start with. i guess you can deck 0.5-1mm without the need of a vernier... to deck the block it needs to be bare dissasembled block,...

Thanks for that ANT. ages ago I asked you for m20 turbo msq file, so i can have a look at yours :) in fact i got early euro 9.7:1 pistons all my calculations are here - came out to exacy 8.6:1 http://www.e30tech.com/forum/viewtopic.php?t=30065&highlight=crank+rod+combination I'll loose some squench ...

update aswell... :) found an eta engine on the junkyard. It is in pretty good conditions, despite 188k miles on it. it was from an auto, crank and rods have very little freeplay. will need new bearings/rings though ! I have decided to go with the I pistons. so basically, i'm gonna have an I engine a...

the 1.35mm is from the last 2.7 hybrid I had apart, late 8.8:1 pistons 320 rods, 81mm crank and 2.5 block hello. I appreciate your input, and i do not want to be rude or argue, but i just do not understand the 1.35mm you mentioned. you say that on the 2.7 stroker (as described abouve) the pistons s...

i pistons ( 8.8:1 ) Eta crank Eta/323/320 rods ( same ) 885 cylinder head this will leave the pistons 1.35mm down the bores compared to stock, ( the eta block is 0.5mm taller so add that to calcs if thats the block you want to use ) Using the 2-5 pistons maintains the stock CC shape, always a good ...

Thanks fo input guys. I never realized that eta block is 0.5mm higher... the seem to be differences between UK and US edition of m20 engines. here in New Zealand you can find both types... so essentially i got an early 9.7:1 m20 engine, so i'll just rebuild it with eta rods and crank for 8.6:1 (that...

hello dudes. Can somebody confirm that I'm on the right track ? CC = combustion chamber volume CR=compression ratio sweep = bore*stroke all calculations for single cylinder. now, on stock m20b25 euro with 9.7:1 compression, CC = sweep/CR-1 = 47.774 cc's because the crank has extra (6mm/2) = 3mm thro...

10w-40 10w-50 ideal, best to go fully synthetic if you can. What brands do you have available to you out there? CHeers Guy. Thanks for input. common ones are: Well... we have mobil one full synth 15w50 castron formulaR full synth 10w60 pennzoil full synth 15w50 elf I seen only semi synth other chea...

Hello Oilman ! What about engine oil for here, in New Zealand ? temps in Auckland vary from abour 5 deg C in winter to over 30 deg C in summer. My car has 128k miles on the clock, m20b25, standalone ECU, mostly short trips, which means alot of cold strarts with ocasional blast through some open road...

hm... yeah, he's right... it can possible be the injector... maybe is half burned and not opening complelty or clogged or something... feww wat to check would be to swap offending injector with one form a good working cylinder. that will require pulling fuel rail and it's a rather tricky, but hey - ...

really wierd. how come can you confirm it has the spark ? if the rotor arm is worn, you might be not getting spark on that very cylinder. might be a good idea to check out rotor arm. dont bother checking injector. if the plug is black and wet from petrol, it means the injector is most likely right a...

tps is throttle position sensor (or switch in case of stock m20). it's under the throttle plate. it tells the ecu when your foot is off the throttle. check electrical connections to it.

do you know which cylinder ? you can check by unpluggin spark plug leads... if you unplug ont one thats causing missing, engine behaviour wont change. re crank sensor... if it was not picking up correclty your car wouldnt even start - but it's a good idea to fix it ASAP. undo the plugs and see whats...

sounds like tps ot broken.

unplug and check whether it makes any difference to idle.

hm..... late I pistons will be hard to find (read expensive)
whats wrong with E pistons under I head ?

m21 TD cranks here in NZ are as rare as rocking horse sh*t, yes I would like one, but good luck finding one here...

Each motor I swap in costs around Ã‚£100 so why bother rebuilding one? Some good points in your post mate. Thats wht I want to get cheap E block, possibly cheap rebuild) and slap my rebuild head onto it. thats it.. i dont want to buy any custom/modified pistons or pay for other machining/fabricatio...

AndyTouring wrote: Getting the 525e engine is the easiest way although you may end up needing a new set of pistions which adds to the cost.

Thats exacly what I dont understand... why those pistons might be a problem ?

Thanks for good input. I really appreciate it. Basically I want the converssino to involve as few purchases as neccesery and as many parst to be reused. My confusion somes from amount of types of parts. Namely aparently early UK version etas had high compression (11:1), and later ones something like...

ah, great help guys.... I'm still trying to source out a 2.7 block... would it be preferable to get one from wreckers and rebuild, or get one from private sale in going condition ? how to enforce claeningness ??? latex glower recommended ? whats the best way to clean the block and parts before strip...

Hello guys. I'm looking for any materials i can find re general engine rebuild/m20 engine rebuild and 2.8 stroker conversion. I already have megasquirt, but i'm seriously considering total engine rebuild before putting turbo on it. I'm capable with tools but i never rebuild engine myself, so basical...

i myself so far installed megasquirt 2 into my e30 325i, and now working on turbo setup. however here in NZ it's quite popular to put nissan SR20DET's and turbo rotaries into E30's....

depends on the steepness of the hill you are parking on...

yes, if you are too low, the pump intake might be partially not submerged in fuel hence the problem (while the rest of the fuel is in the other side of the tank

)

Hello guys and gals. I recently succesfully installed megasquier II ecu in my e30 325i (ms2 writeup comming up shortly). durning the install of MS few weeks ago I realized my battery is dead (after charging for 48 hours it wasnt fully charged, and it would do only 2 starts of the engine then went fl...

can I just take eta crank/rods/pistons and swap the current ones in my 325i ? to get 2.7 stroker effect ?

i cant be bothered rebuilding whole engine/etc, but if that all I neeed then i might just do it...

Hello. I admit I didnt read much about those stroking m20, but some parts are avialable at my local wreckers. I got 325i current. there's a sholw 325 eta engine on the wrecker yard. Now, for the stroker conversion do I need only? : 1. eta crank 2. eta rods (are 'i' rods better?) 3. eta pictons do I ...

60-2 trigger ( stock 88 on motronic 1.3 onwards , stock VR pickup ) std fit coild and dizzy cap MS 1 V3.0 PCB coil is live with ignintion on and grounded through the MS as per motronic setup My kit came with an upgraded coil driver btw, maybe thats the soloution for you M8 ? all I can suggest is ta...

I did ms2 install and all is great except one major problem i have. Namely I'm pretty sure I have 'weak spark' problem. I.e MS by itself is not capable of driving rather large coil that my e30 has. now, important observation: my motronic 1.0 ECU has built/integrated in ignition amplifier (otherwise ...

Search found 127 matches

Grinding Crank ? Nitriding ?

Re:

Re: 2.7 with early pistons

Re: 2.7 with early pistons

Re:

Re: m20 engine with a turbo

Re:

Re: 2.7 with early pistons

Re:

Re:

Re: m20 rod/crank/piston/head combinations for stroker

Re: m20 rod/crank/piston/head combinations for stroker

Re: m20 rod/crank/piston/head combinations for stroker

m20 rod/crank/piston/head combinations for stroker

Researching m20 engine rebuild & stroking...

alternator gone ?

quick 2.7 stroker job ?