MWP's wannabe Tarmac Rally 5S-GTE ST185 (racing!)

MWP

New member
Some updates....

MegaSquirt V3.0 PCB built with attached MS3 processor board:
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JimStim V2.0 built (used to test the MegaSquirt on the bench):
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Testing with my DIY MS3X status/testing board:
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MS3 and MS3X 12 foot long wiring loom bundles:
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MWP

New member
Engine bay cleaned & painted...

Before:
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After:
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Underbody sealer (tar) + chassis-paint + sand mix brushed on:
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MWP

New member
Next is to start cleaning up the factory wiring, removing whats not needed.

Also still looking for a SXV20R block :(
 

aus jd 2703

New member
what valves and size valves are you using?
im having a browse at valves for my engine as the heads the next thing. and ive read ferrea valves wont fit gen 3+ engines any truth to this?
also ko racing sell ferrea valves in 2 and 2.5mm over size so might be worth the extra cash to get it from ko for the extra flow.
nice progress, let me know how u go with the megasquirt ive heard good reviews but then a mate had one and swapped to vipec so im curious how u find it.
 

MWP

New member
Stock valves.
The EPG does list a different part number for the valves, but they are the same size, so they must have changed material or something else small.

Did your mate get the MS installed and working?
 

aus jd 2703

New member
yes in a turbo'd mx-5 was running a t-25 not sure what model it was.
he sold it shortly after blowing a turbo due to the crank angle sensor moving or something and it dumped fuel retarded timing and blew the turbo apart when it back fired, i guess like anti lag but worse. not saying it was the ms, it was the crank angle sensor. im curious on another opinion. he thought it was good for the money. it was probably an old model as he bought it over 2 months ago
 

MWP

New member
There are 3 base models of MS, and you can still buy all three.
Then there are a lot of variations on top of that.

Latest and greatest is the MS V3.0 mainboard with MS3 processor card and MS3X expansion board, which is what i have.
Very powerful lil things.

Vipec's are awesome ECUs though.
If i wasnt going with an MS, i would buy a Vipec V88.
 

aus jd 2703

New member
ill have to look into it cause i have been looking for a haltech 1000. i like the option of a dash display and the little hand controllers that wolf and microtech sell look like ass lol.
im not sure if im electronically enclined enough for a ms but ill look into it. i want an ems so i can go e85 :) try and run 20psi on a stock gen 3 lol
 

MWP

New member
To run a MS you really do need a decent clue about automotive wiring, and fuel tuning theory.
You also need to take the time to read all the manuals.
To keep it cheap, you need to be able to tell a dyno tuner how to use the tuning software, otherwise they will spend days ($$s) trying to work out how to use it.

I was going to go with a Vipec V88, but the MS3 + MS3X has as many features for 1/3rd the price.
You can see the kinda features they are working on for it in here: http://www.msextra.com/forums/viewtopic ... 25&t=38967
 

Klas

New member
I run Haltech in my st165 and MS3 in my Jeep wrangler.
I think both of them are easy to work and tune with and good info and support is avalible online.
If you are on a tight budget, the MS can´t be beaten.

Keep in mind that MS uses serial port, so a adapter is recuired if using an modern laptop.
 

MWP

New member
Yeah i know... but ive been in an accident recently where ABS probably would have saved the car, so i would like to keep it :(
 

MWP

New member
More updates....

After a 2-3 month long search, i finally got my new +98 5S engine block yesterday which looks perfect for the build.
It came from a burnt out engine bay, but the block is in perfect shape.

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Some more progress on wiring...
Ive identified all the wires that run around the engine bay and am re-routing power wires back into the cabin for the new relay & fuse box that will behind the front seats.
Ive also removed all un-needed wires (mostly air-con), and moved the ABS relay (yes, ill be keeping ABS) to under the front right guard.

Relocated ABS relay:
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The branch of wires running to the lower left in the photo are all power that will be re-routed to behind the front seats.
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MWP

New member
Photos! :)

The new 5S block has no mounting points at all for the mid transcase gearbox mount (would normally bolt up under the knock sensor).
Not sure what i can do about this yet :(
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Need to get holes drilled and tap for this gearbox mount.
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Comparing ST185, +98 5S and ST205 timing belt crank pulleys.
Ill need to run either the ST185 or ST205 pulley, but with a timing wheel like that on the 5S pulley.
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Closeup of the 5S pulley and sensor on the oil pump.
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Comparing ST185, ST205 and 5S water pump rear housings.
The St205 pump is clearly designed to flow a lot more coolant! Ill be using it if i can.
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Not the best working area, but it'll do :)
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