4g93 Mivec Conversion

you can go whatever way you lke man, only take what we are giving you as advice, but jsut know that all the high power NA builds have had alot of money soaked into them, basically to challange other NA builds for the faster time, where as the turbo builds leave them for dead. check out the US mirage forums. they turbo everything over there.
 
matty said:
It's just a 1.6 designed to be fast that means that it has to rev it's nut out to make power. It makes less torque and takes longer to get there. 94 max tq at 4250, whereas the 92 you have to get to 7000rpm for less torque. This is the reason the 92 mivec has the close ratio box to make up for it's lack of torque. So cost vs power 94 was my choice and servicing, parts and reliability factor that in too. I'll be looking at dynoing mine soon to see what it's making before being tuned just for a figure to put down.
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Thanks Matty,
Can you compare it to a B16 powered Honda?
I have a lot of experience driving a B16 EG Civic and it was certainly not slow for a 1.6. No one would believe me when I said it is a 1.6 liter. Is the 4G92 similar?
 
BI65ND said:
Supernova on here has a mirage with a 4g93, bolt-on intake and exhaust with a standalone ecu that ran a 15.2 with an undersized throttle body. Might also be worth looking into the g93/4 and what you can do with these engines rather than just jumping straight into an engine swap.

Check his ride thread out here: http://www.auslancer.com/forum/viewtopic.php?f=23&t=1953&p=63307#p63307
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He bettered the time with a 14.9.

A 4g92 mivec head on a 4g93 block will required extra modifications such as a standalone ecu in order to tune the engine properly.
From my experience the air fuels with be very lean especially from mivec rpm switchpoint and up.
Even a fuel reg alone with increased pressure will not be very ideal since you would have to raise the fuel pressure so high and it will make areas that dont need extra fuel become too rich.

People who dont know this end up complaining since they dont see results they were seeking for. Ending up selling the car before anyone in the community sees real results.

the 4g92 mivec is certainly not slow for a 1.6L but in many ways it is better to use the entire engine as a whole to retain the high compression ratio of the 4g92mivec engine to take advantage of its advantages instead of making it a low compression engine with a higher flowing head design and cams that dont suit the CR.

Ive done a few 4g94 2L swaps into lancer coupes. Very basic builds with only intake mods and one had aftermarket headers. Customers claimed much improvement over stock 4g93 with cold air intake. But the 4g93 with a good i/h/e setup, standalone ecu and tune would smash the 4g94s. It shows that building a setup that works together and not just slapping parts together will get better results.
4g94 engine with the same recipe would net mid 14s quarter on regular grippy street tyres.
 
Spetz said:
matty said:
It's just a 1.6 designed to be fast that means that it has to rev it's nut out to make power. It makes less torque and takes longer to get there. 94 max tq at 4250, whereas the 92 you have to get to 7000rpm for less torque. This is the reason the 92 mivec has the close ratio box to make up for it's lack of torque. So cost vs power 94 was my choice and servicing, parts and reliability factor that in too. I'll be looking at dynoing mine soon to see what it's making before being tuned just for a figure to put down.
Click to expand...

Thanks Matty,
Can you compare it to a B16 powered Honda?
I have a lot of experience driving a B16 EG Civic and it was certainly not slow for a 1.6. No one would believe me when I said it is a 1.6 liter. Is the 4G92 similar?
Click to expand...
Hmm have to go with the honda there. They just seem to go a bit harder.
 
They also have a much better R/S ratio compared to 4g92s, so they are more suited to making power up top.
 
What about the 4g93 DOHC? i've got the stock SOHC, which is quite a good engine for a SOHC but is it worth swapping to a DOHC for performance builds?
 
Depends on your plan and how much money you want to spend all up over a long period. My performance mods engine and gearbox alone is somewhere around the 3500-5000 dollar mark over 7 years of ownwership.
 
I just dont wanna end up with a SOHC engine with custom cam and value spring pistons and everything and not get a big enough power return
 
not really, the dohc will cost u similar to what the 92 head will cost, ~$1k

and the sohc is quite good, and can be ported/polished valves done cheaper to flow the same or better
the only real benefit of the dohc head is that you have more cam tuning options and adjustment, due to the intake and exhaust cams being separate in dohc heads
(which isnt that useful unless u really know what you are doing, and have a need for it)

and again they are quite hard parts to find, like the 92

it is more of a big mod, and if you are looking at turbocharging the 4g93, i would honestly say you are better off buying a CM5A front cut (4g93T dohc engine) as it has everything you are looking for on the factory engine and will save alot of hassle, front cuts go for ~$3k, but have EVERYTHING needed for the engine swap
will end up alot cheaper than a dohc.... then a turbo setup built custom
 
The 4g93 DOHC make 103kw, and IIRC you can get the heads from LLT for about $1200

Which is like $80/kW, Id much rather have the 1.8 to play with aswell.
 
cm5a is $20/kw (and will encompass both dohc and turbo dreams with 150kw)


if ur looking at gains only cost/kw, it is $50/kw gained above stock 4g93
 
Res said:
not really, the dohc will cost u similar to what the 92 head will cost, ~$1k

and the sohc is quite good, and can be ported/polished valves done cheaper to flow the same or better
the only real benefit of the dohc head is that you have more cam tuning options and adjustment, due to the intake and exhaust cams being separate in dohc heads
(which isnt that useful unless u really know what you are doing, and have a need for it)

and again they are quite hard parts to find, like the 92

it is more of a big mod, and if you are looking at turbocharging the 4g93, i would honestly say you are better off buying a CM5A front cut (4g93T dohc engine) as it has everything you are looking for on the factory engine and will save alot of hassle, front cuts go for ~$3k, but have EVERYTHING needed for the engine swap
will end up alot cheaper than a dohc.... then a turbo setup built custom
Click to expand...

cm5a front cut does not have everything.
the gearbox that comes with the cut is generally not used.
people use the 4g93 fwd gearbox
then you have issues with clutch slave cylinder not mounting up because it is in a different position on the awd tranny and when mounted on a fwd tranny it fouls the turbocharger.

To the person asking the question that you think a 4g93 with the right mods cant be fast. Im was no bluffing when i said with good i/h/e setup and a good ecu tuning made it down the quarter in 14.9s.
Im building another car to better this time also with a 4g93 single cam.
 
If it was me (and I had to go 4 cylinder)

I do the following:

94 block
Pnp 94 head
92 intake
Big duration cam
Big tube exhaust
Injectors to suit
Short ratio box and lsd
Adaptronic or flash
 
unclepaulie said:
If it was me (and I had to go 4 cylinder)

I do the following:

94 block
Pnp 94 head
92 intake
Big duration cam
Big tube exhaust
Injectors to suit
Short ratio box and lsd
Adaptronic or flash
Click to expand...

Why on earth would you want to do that ;-)
 
Joshy_morris said:
Honda have vtec... Thats all.... U can make a lancer go just as fast
Click to expand...
That's just a comparison of the 4g92 and the b16 stock. Of course you can make a lancer go hard. I work for honda an drive a mitsu, honda engines are really well engineered for what they are.
 
Yeah hondas have pretty good engines, one of my favourite brands, but i like the lancer look better than the hondas and you dont see many of them done up properly. Well i havent, theres probably alot on this website though :) I may just stick with the 4g93 and see what kind of performance i can get out of it. I think the ecu will probably be the hardest thing to get right, just got one of those OBD comms but i dont think it will be compliant with the stock lancer ecu so i may have to grab one of the custom ones on the market when i start playing with the intake. Oh just a quick question, the 4g93 DOHC wont just bolt onto the SOHC block will it? i had a bit of a look on the net and people are pretty vague about it
 
4g93 DOHC head, will bolt onto the SOHC block, as they are more or less the same blocks, the DOHC blocks have oil squirters for the pistons is the only difference i know.

So yes, it will fit, d3x on here did the swap on his CE, in fact you could probably ask him for it since hes swapping his whole engine out.
 
it should just bolt on, with new timing belt to suit
 
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