Medusa build

[fuzz86lude]

hello,

been a member on PreludePower for a while and noticed more turbo A20 builds here..

i thought i would share my build and maybe get some ideas or help from any of those who are currently boosting or have boosted their 3g.

back in march i had a near accident that killed the engine(long story short, near head on resulting in going off the road into the ditch. resulting in a large piece of something smashing into the pan.

[fuzz86lude]

i went with the route of new forged rods, pistons, ported head(off the blown engine), isky custom grind cam, MSD streetfire ignition system, MSD Boost Timing Master box, and a garrett .60 a/r turbo..so far

[fuzz86lude]

one of the things i'm trying to figure out is the engine management.. i see a lot of OBD1 conversions, SAFCs, but not hardly any OBD2 conversions.

one of the guys i deal with at the shop has HP tuners for his GM builds he does....from what we figured out a Cobalt SS has ignition and boost timing all in the ECM and he can turn off all the unnecessary things to make it all work.. i'll have some pics up as soon as i get a few more posts in.

[89T]

You can pretty much all the same things with obd1 and say Neptune or hondata .You would also have boost control included.

[AccordEpicenter]

why would you want to go obd2?? Piggybacks suck, boost timing masters suck, you really need to convert to obd1 and run neptune or crome. I run a chipped civic P06 and it works great. Going obd1 youll be way ahead in the wallet and power departments vs any other managemant, its got the most bang for your buck by far, and its a powerful tool for tuning also, you have far greater control than a BTM and SAFC. The only thing better would be some kind of high end standalone but there are not many clear advantages to that scenario.

[stat1K]

gm and ford obd2 is about as equivalent to honda obd1 in the tuning department. i know several ek civics that run obd1 with obd2a/b-obd1 converters to run a p28 or p06.

[fuzz86lude]

@AccordEpicenter, i was amazed to see your car run on the dyno with the boost turned way up.. never really seen that much power from a 2.0 before


the obd2 was an idea i looked at because of the tuning software we have for GM LSX builds we get.. i'm still looking into the tuning part as soon as the engine is in place and is in the process of being broke in. plans are to finish the build, install the engine with the original auto trans, break in the engine then swap to a 5 speed. work on tuning for boost and seeing where i go from there.

the boost timing box i have was a deal when i got it.($100 for the Streetfire, Blaster high vibration coil, and boost timing box)

[Tdurr]

Go obd1. If your spending this much money on internals I'd hate to see you fry them thanks to a tuning loophole. This is coming from a guy who had a safc and btm on a big 16g. It was fun but I felt I wasn't able to get the reliable power I wanted.

Also welcome and pics pics pics! We love those here lol.

[fuzz86lude]

how much boost did you run?
also SS? used to have a few parts runs down there a while ago

[fuzz86lude]

and finally the pics are here!!

previous home of the new A20


stripped down block



flanges!



modified "bundle of snakes" calais intake



eagle H beam rods





JE pistons

[fuzz86lude]

crank after polish and balancing



bearings





block after being in the machine shop

[fuzz86lude]

[cygnus x-1]

one of the things i'm trying to figure out is the engine management.. i see a lot of OBD1 conversions, SAFCs, but not hardly any OBD2 conversions.

one of the guys i deal with at the shop has HP tuners for his GM builds he does....from what we figured out a Cobalt SS has ignition and boost timing all in the ECM and he can turn off all the unnecessary things to make it all work.. i'll have some pics up as soon as i get a few more posts in.

You don't see OBD2 on (modified) Hondas because Honda OBD2 ECUs are not really tunable. All the tools out there are for OBD1, which is why everyone uses them. OBD1 works well although to be honest the technology is pretty dated now.

Piggyback modules are cheap and easy but don't give you as much control. Aftermarket stand alones are good but usually quite expensive.

Ultimately you need to choose whatever EMS you or your tuner will be able to setup correctly. No ECU is worth a dime if you can't get it setup and tuned right.

C|

[fuzz86lude]

as far as obd 1 goes which is the one of the best tuning softwares to use..

i've heard more about crome and neptune between the two forums

[2oodoor]

sick build, I love it!
... somebodys into GM, if that is a real oem packaged ss camaro ( and it certainly looks like) it is quite a gem, those have some unique goodies most people arn't aware of. Then I see a TA of the same era as well

[cygnus x-1]

as far as obd 1 goes which is the one of the best tuning softwares to use..

i've heard more about crome and neptune between the two forums

From what I've heard I think Neptune is pretty good. Crome maybe not so much anymore.

C|

[fuzz86lude]

sick build, I love it!
... somebodys into GM, if that is a real oem packaged ss camaro ( and it certainly looks like) it is quite a gem, those have some unique goodies most people arn't aware of. Then I see a TA of the same era as well

we get oem SS camaros in all the time along with T/As, GTO, G8, Vettes...very rarely we get something special like a converted GTO.. had no Pontiac badges at all but all the body work was replaced with Holden parts..

we mainly do work on GM cars with the LS engines ..some builds are full rebuilds, others are simple head, cam, and headers..


finished cleaning up the manifold flange..ports are now matched to the head.

[gfrg88]

Pssst, move it to prelude side


Good to see this build over here though

[fuzz86lude]

Good to see this build over here though

Figured it would be alright to share my build with other people in the a20 community, especially since there are a few builds involving turbo

Got an idea with the mani now.. might try to make something to match the intake mani or maybe a little short with the same concept..

[gfrg88]

something like that, with a short air to water intercooler would be insane! The boost response would be pretty badass!


Have you figured out what turbo you're going with, yet?

[gfrg88]

Something like this, from turbo right to throttle body

[fuzz86lude]

I already have the turbo at the shop on my toolbox.. ill see what model garrett it is

[MessyHonda]

sweet build. what trans and clutch are you going with?

[fuzz86lude]

@ Messy, i plan on getting my auto swapped for a manual. not sure on clutch, would like to see what kind of deal we can get on a Spec stage 2 kit..

@ Gio, i have a Garrett M24 .60 A/R and a turbo off a Nissan 280zx(TB03 i think)

[MessyHonda]

here is some info on some good clutches for the a20

Clutchnet makes a stage 1-3 clutch for our car. I had a stage 3 6 puck it in my car but I took it out because it was too stiff for daily driving. It had the best grip out of all the clutches i owned.(I might have the pressure plate still if you want it but il have to look for it in my pile of parts) clutchnet quoted me around 100 dollars to install new springs on the diaphragm

For the transmission you might want to get a long geared trans from a carbed 3gee because it was the longest gears(helps you build up boost).