My 7MGE Build

[andrew_mx83]

i think so. certainly sits on more revs with the manual.

3.9:1 final drive factory so the auto must be pretty tall. second gear is good for 125 on the limiter.


i think the converter and general "autoness" does it no favors, u can just feel it robbing power, no matter what gear ur in.

one thing i did notice was when auto the car was pretty quick from 80k upwards, and shithouse down low. with the manual it has get up and go from 0km/h but maybe not quite so impressive from 160+

[hosking1991]

alright been a while i know

but the engine specs are as follows

7mge(duh)

performance valve springs
2jz inlet and exhaust valves
slightly ported head (around the throat area manly and radiusing the short turn on all ports )
reground cams (268 advertised duration)
manly lash caps to adjust valve lash

1mm/.040 o/s pistons with 10 cc dish
arp rod bolts and head studs ajusa metal head gasket
king bearings .010" undersize on the pins and mains

bearing clearence .0015-.0018" all round

i have decked the block about 25 thou and 20thou off the head

the pistons at tdc are protruding 5 thou giving me 10.5:1 compression ratio

some pictures

lash caps







inlet port

[hosking1991]

chamber view



pistons all in



conrods and arp rodbolts





hopefully i'll have the engine in and running within the next few weeks


cheers luke

[Kedderz]

Looks good mate, what management will it be running?

[hosking1991]

Hey kedderz to start with it will be factory management and hopefully in a few months time I'll go with some sort of a piggyback or a apexi afc etc

Luke

[paradox616]

Hey kedderz to start with it will be factory management and hopefully in a few months time I'll go with some sort of a piggyback or a apexi afc etc

Luke

Seriously i'd consider standalone. the stock tune will be all wrong for this engine, I know there isnt much in the way of plug n pray ecu's for the 7m let alone the 7mge however do not overlook the ecu it will be the best bang for buck you can spend.

[Jin~Jah]

Looking good

[boxh34d]

For the money most spend on piggy back systems for often average results, I would highly recommend stand alone. My 7MGTE really came to life with an adaptronic, and is quite possibly the best bang for buck mod I've done so far. The ability to dial in some real timing figures and pull out some fuel in the mid range transformed the car completely.

Congrats on getting it all together BTW, its great to see someone going down the NA 7M route since Ed's has gone off site. Looking forward to seeing some positive results.

[BLACKCAT]

Not a good idea to completely grind away the valve guides.
Your valve stem seals will now wear quicker.
They could have been reshaped a bit to slightly improve airflow.

[hosking1991]

Care to Explain why? The main reason for seal and valve guide wear is due to valve train geometry which the 7m has none basically (straight up and down motion, no pushrods or rockers etc) and also the valve being eccentric to the valve seat

Also on another note the engine is up and running great, cams come in around 3500 rpm and pull nicely from the onwards and sounds pretty beefy idleing I think I may go a full standalone ecu sometime soon though gist tossing up which would be better ecu for a na 7m

Cheers luke

[andrew_mx83]

is it still on cam at the limiter?

[hosking1991]

Andrew I think it is safe to say yes, I have only gone out to 6000-6200rpm?? And it makes plenty of power round there

Also guys re standalone ecu's what is a recommended ecu for a 7mge??

Cheers Luke

[andrew_mx83]

then yeah u need to get rid of that pesky rev limiter

i did last weekend now my daily does 7500 and is still pulling strong

[hosking1991]

Nice , What cams you running with that combo?

Luke

[andrew_mx83]

stockers with 4deg retard on the intake... pulls HARD to 7000, still strong at 7500 but you can feel it doesnt have a lot more to go. stock bottom end with full counterweight crank anyway so im not game to go any higher -this motor was built for torque not revs and doesnt have the supporting hardware