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Time to build a killer motor
#1
Posted 28 February 2005 - 06:02 PM
motor is for an '85 RX Sedan...which doubles duty as my rally car
My aim is to go out and show a couple Mazda 323 GTX's how it's done...both GTX's are are making around 145-150 WHP. A GTX and my RX are similar in weight...however i will do some weight reduction on the rx with Plexi windows and that kind of thing
So...my aim is 150-160 whp...but reliable....This engine needs to run at WOT for effectively 90% of the time for 12 KM straight...no letting off. Basically the engine needs to be 100% bullet proof.
I'm thinking of 2 engine set ups, both will use efffectly the same parts.. but one will use an N/A block and pistons, while the other will use a turbo block.
But....parts list includes:
- Copper or MLS head gaskets
- Some mild port/polish work while the heads are off
- WRX or similar Turbo
- WRX or Front mount I/C
- Proper engine management tuned with a wide-band 02 sensor (i have a wideband)
- Custom exhaust manifold
- Larger or additional Injectors
- possibly timing tuned for 110 Octane fuel
If i run "low" compression..it'll run around 17-18 PSI..if "high" compression...probably someplace around 12-13 PSI.
Anyone wish to wager a guess as what kinda #'s this would put down on a dyno? I know what Will's made...and if it made that and was completely bullet proof i'd be happy.
#2
Posted 28 February 2005 - 07:05 PM
good luck and keep us posted on what you go with and how much your putting out.
peace
tim c.
#3
Posted 28 February 2005 - 07:06 PM
#4
Posted 28 February 2005 - 08:32 PM
lets see, you could get a p&p on the intake and exhaust, valve job, delta cams , forged pistons, spyder intake manifold with larger throttle, better injectors with possibly a custom fuel rail, adjustable fpr, high flow fuel pump, ms'n' edis with msd ignition components, deadbolt monster td04 turbo, custom header, 2.5-3" exhaust with like a bell mouth downpipe, lightened and high rmp balanced drive shaft, 2-core radiator, fmic, lightened forged piston rods, possibly a light weight balanced crank, ic sprayer, and thats all i can think of for the moment, i might burn a few more brain cells trying to think up some more though. i think that can all be done with the ea82. thats my plan for building up a monster anyways. itsgoing to hurt my wallet.
good luck and keep us posted on what you go with and how much your putting out.
peace
tim c.
You forgot something, Tim.
Water injection - great safegaurd against det. It's definitely going into my EA82T.

#5
Posted 28 February 2005 - 08:36 PM
Its proven 161 WHP/205 TQ....TWE header, Downpipe...WRX (Now STi) TMIC, GReddy Spec II EBC, an intake...thats it...otherwise its stock and Ive put 10k miles on this, and the Dragon trip last time was most certinly about 20 miles (went thru it about 4 times) of nothing but WOT at high boost. No issues.
AND on top of all that...NO LAG!!

You can go to a PnP TD04L13G and not have much lag still...but you will certinly need some engine management and injectors...I imagine you can get about 250 at the wheels on a 13G.
#6
Posted 28 February 2005 - 08:55 PM
How we push the engines is rediculus...they take a serious beating.
i forgot about the cams...however...i'm not positive they do a pile except more the power band up a couple hundred RPM's. We put Delta Cams in a Legacy Turbo, and that's about all it did for it.
I am thinking about a WRX turbo, or the VF-11 (legacy turbo) that i have now...
I didn't venture much above 8 PSI with the VF-11...mainly because i didn't need the power just running on rubber tires....I'm thinking of running studs next year and need more power..
#7
Posted 28 February 2005 - 11:59 PM
#8
Posted 01 March 2005 - 01:54 AM
#9
Posted 01 March 2005 - 09:59 AM
#10
Posted 01 March 2005 - 11:34 AM
#11
Posted 01 March 2005 - 11:43 AM
#12
Posted 01 March 2005 - 02:02 PM
Unfortunately the price of TWE headers does not look so appealing to me, when i have the tools and ability to make my own at a fraction of the price.
#13
Posted 03 March 2005 - 11:05 PM
take Will's set up add engine managment and you should be set, with ofcourse some studs and better head gaskets
What kind of management would you recommend?
#14
Posted 04 March 2005 - 12:37 AM
#15
Posted 04 March 2005 - 02:27 PM
I dunno, how much have to got to spend? I'm going with MS&EDIS, cause I'm mostly broke and I'm going to tune it myself, but any will work
How much have I got to spend? Not much... I was planning on some sort of AFC.
How hard is it to use this MS&EDIS?
#16
Posted 04 March 2005 - 04:50 PM
That is basically where they counterbore the block and put a meatle wire o-ring into the counter bore. It is impossible to blow a H/G at the cylinder than. The only thing that could happen then is push the head off of the block, but I think with some good heads studs that would not happen.
I know a guy that has done this with a dodge cummins and runs about 90lbs of boost. Before he could only run 45.
#17
Posted 04 March 2005 - 04:53 PM
#18
Posted 04 March 2005 - 06:00 PM
#19
Posted 04 March 2005 - 06:11 PM
#20
Posted 04 March 2005 - 08:48 PM
i like that idea. i wnder if that will work on an aluminum block
it works on a race fiat 1500cc alloy blocks one of our clients at work come and got some 0.6mm stainless mig wire to use for his block which was being machined for it at the time,it worked perfectly and he hasn't had a problem with blown HG's for 2 years now
1500cc fiat 14.5CR N/A
#21
Posted 04 March 2005 - 09:11 PM
#22
Posted 04 March 2005 - 10:12 PM
#23
Posted 04 March 2005 - 11:38 PM
I'm planning on using EA82T plumbing, USDM WRX IC, or maybe an old AWIC if I can find one.
Then, add water injection, boost controller, VF11 or VF7, maybe even a VF8.
I'm going to need an AFC to prevent busted pistons, I know, but the more safegaurds the better. Anyone have anything on this MS&EDIS? I'm too lazy to search right now.

#24
Posted 05 March 2005 - 01:58 PM

#25
Posted 05 March 2005 - 03:18 PM
Oddcomp is running it, and I believe shadow also knows tech stuff. I have MegaSquirt pages bookmarked... somewheres.... Anyone have anything on this MS&EDIS? I'm too lazy to search right now...

MegaSquirt is the fuel management portion of the system, and uses a Motorola 68000-series micro as its processor. It does not use the MAF, but rather a MAP sensor onboard. Very tunable/configurable.
EDIS is an adaptation of the Ford Electronic Distributorless Ignition System. It uses a crank-mounted reluctor ring and sensor to trigger a coil-pack (one coil output per cylinder) in a wasted-spark manner.
MS and its variants are offered in kit form (around $200), and some people are marketing turnkey systems (2-3 times as much).
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