building a turbo engine for sw20

Re: building a turbo engine for sw20 (appledrift)

Fri, 31 Jan 2014 17:48:05 GMT

yeah was thinking to buy the gen 3 3sgte set up and just up grade the parts i need too but i have only been able to find them in the u/s and canada out of MR2's for about 5k with out postage
and yes it was a typeo im aiming for 280kw at the flywheel
i have looked at a few builds and people have chopped and changed things to get more power, some people like certain mods others don't and some people just throw money at there engine builders to build them and go on what they think needs to be done, im on a budget thats why ill be doing it myself but i guess ill see how i go
i think how ever the cheapest option for me to do is buy a gen 3 3sgte with the E153 LSD trans and see if i can get one from a Jap wrecker i Aus
and go from there
thanks for the help guys

Re: building a turbo engine for sw20 (MR2QIK)

Fri, 31 Jan 2014 14:19:54 GMT

This thread gets a bit confusing for me, but it doesn't sound like it's going to be a high HP build. If I read correctly, it's 280kw @ the engine, so ~225-235rwkw. I'm going to assume its a Gen3 NA MR2.

Since you're a mechanic, your easiest solution would be to swap to a Gen3 3SGTE. That way you get the much nicer E153 LSD transmission (arguably one of the strongest OEM 5speeds mated to a 4cylinder in the import world). Conversion price would be similar to you rebuilding/turbocharging a Gen3 3SGE with forged pistons etc etc. That mated to a free flowing exhaust (inc dump pipe), W2A I/C, ECU (flex fuel setup) & EBC. You'll probably hit close enough to your mark. Need to upgrade the fuel pump too of course. You also have the option to upgrade the turbo with say a GT28 rally potato or a GT3071 to easily reach/exceed your goal.

If you're a good shopper & as mechanically competent as you believe yourself to be, I think you might be able to exit for ~$6-7k.

Re: building a turbo engine for sw20 (purple5ive)

Fri, 31 Jan 2014 11:32:38 GMT

Gatesys SW20
for a mechanic who has done ' plenty of engine builds' he sure asks alot of questions.

Just have a look at alot of the show room thread,
I.E ROBK
MRSKYLIGHTER had a nice 300 kw sw20
BEAGLE SENIOR
B24
DASIC
MR2 QIK
theres a REAL nice blue one that has near 400 rwkw cant think of the owner but that one is a monster.

Just don't look at SUROKs
ahahahahahahahhaa

if you didnt already know, Surok bought Mr skylighters 300kw SW20.

Re: building a turbo engine for sw20 (purple5ive)

Fri, 31 Jan 2014 11:31:02 GMT

Nathan,
something you might want to consider is buying jeremys gen 3 engine and refurbing that yourself, might work out cheaper, he is also in Melbourne which is a bonus
cheers

Re: building a turbo engine for sw20 (just_ace)

Fri, 31 Jan 2014 01:27:34 GMT

Oh, didnt see that. For 280hp then std cams are fine. Wouldnt even worry about forged rods. Ill check but I think gen3 rods are all the same. They will take anything you throw at them.

All you need then is upgraded fuel injs ( I have some from a caldina gte which are for sale) walbro fuel pump and a fuel regulator. Thats all you'd need for 280hp.

Re: building a turbo engine for sw20 (Gatesys SW20)

Fri, 31 Jan 2014 00:00:02 GMT

But based upon the usual hunt for power.
ECU, FUEL UPGRADE- pump FPR injectors, Turbo, cams, forgies, tune

for 280 HP:,
ecu, tune, boost.

Re: building a turbo engine for sw20 (Gatesys SW20)

Thu, 30 Jan 2014 23:58:32 GMT

for a mechanic who has done ' plenty of engine builds' he sure asks alot of questions.

Just have a look at alot of the show room thread,
I.E ROBK
MRSKYLIGHTER had a nice 300 kw sw20
BEAGLE SENIOR
B24
DASIC
MR2 QIK
theres a REAL nice blue one that has near 400 rwkw cant think of the owner but that one is a monster.

Just don't look at SUROKs
ahahahahahahahhaa

Re: building a turbo engine for sw20 (Mrskylighter)

Thu, 30 Jan 2014 23:40:25 GMT

Post 7 he confirms 280 flywheel hp. First post must off been a typo?

Re: building a turbo engine for sw20 (just_ace)

Thu, 30 Jan 2014 22:41:48 GMT

Goal is 280kw not hp according to first post

Re: building a turbo engine for sw20 (Mrskylighter)

Thu, 30 Jan 2014 22:02:13 GMT

If the goal is 280 flywheel HP, wouldn't a gen 3 turbo halfcut be the easiest approach?
The gen3 puts out 245HP standard. Fit a larger exhaust, air filter and a bit more boost and you are past the 280HP goal.

Plus the whole lot will just swap straight in. You get the stronger gearbox and driveshafts and the electronics to run the whole thing.

Re: building a turbo engine for sw20 (just_ace)

Thu, 30 Jan 2014 21:39:07 GMT

Simply put yes.

Added bonus of using the na head is its already got top feed injs.

Also, you can unbolt the acis section of the inlet manifold and make a plenum to suit the runners. No ghey centre feed manifold. Or just run the std inlet manifold.

Re: building a turbo engine for sw20 (appledrift)

Thu, 30 Jan 2014 20:31:18 GMT

so basically forged internals bigger cams, balanced crank convert the n/a to a turbo set up and then go from there

Re: building a turbo engine for sw20 (just_ace)

Thu, 30 Jan 2014 20:26:37 GMT

Cranks are the same as turbo.

Stock ignition is fine.

Ports are big enough, basic clean up job.

Std cams are only 250 duration. Prob want some 264s and some upgraded valves springs.

Fancy OS valves not necessary but nice.

Always balance when building.

Re: building a turbo engine for sw20 (appledrift)

Thu, 30 Jan 2014 19:49:42 GMT

ok and what mods will i need to do the rest of the engine like the head and stuff?
will the flow through the ports be ok or do they need to be ground bigger, will the stock ignition do or will i have to up grade ?
and can the stock N/A crank handle the power? as it will be balanced as well ?

Re: building a turbo engine for sw20 (just_ace)

Thu, 30 Jan 2014 18:49:26 GMT

The gen3 GE bottom end is for you intents and purposes just as strong as the gte. The only mod you'll need to do (other than the obv forged pistons) is either drill and tap the block for oil feed to the turbo or source it elsewhere, and fit the turbo sump for the drain or drill and weld a bung to suit -10 hose to your existing sump.