MANDALAY
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RE: robk's MR2 Turbo
2010/07/15 00:37:46
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Dont know if you realise you can put the IC Under the ilet manifold and bolt it to the engine . Remember the engine will rock  Uploaded with ImageShack.us
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artymr2
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RE: robk's MR2 Turbo
2010/07/15 01:02:43
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I think bead blasting leaves a nice finish to the aluminium, sort of a clean new look without looking OTT. A guy bead blasted his alloy wheels to prep for paint, but it looked so good he just clear coated the bead blasted finish instead.
I was thinking going crinkle red on the manifold, but might be too much red (want to do the rocker cover crinkle red outsides, polished alloy middle) and also too much work!!
Re monitoring inlet/outlet temps of the IC, I am pretty sure autospeed did an article on a device that displays the temp difference between 2 probes, would be perfect for your application here.
Cheers
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robk
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RE: robk's MR2 Turbo
2010/07/15 01:10:47
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quote:
Originally posted by artymr2
I think bead blasting leaves a nice finish to the aluminium, sort of a clean new look without looking OTT. A guy bead blasted his alloy wheels to prep for paint, but it looked so good he just clear coated the bead blasted finish instead.
Yeah I've seen plenums that have been sand blasted then clear coated, and they look really nice, so that's probably what I will do. quote:
Originally posted by artymr2
Re monitoring inlet/outlet temps of the IC, I am pretty sure autospeed did an article on a device that displays the temp difference between 2 probes, would be perfect for your application here.
The onboard logging in my ECU will do more than just display two temperature numbers...it will be able to log them so a graph can be drawn in excel etc, which is the best way to visualise stuff like that.
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robk
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RE: robk's MR2 Turbo
2010/07/15 01:14:14
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Now, time for me to re-open a can of worms here. At the monthly meet tonight I heard conflicting views about TVIS and whether it should be retained in a car like mine, which should be putting out 260+ kW ATW when it is completed. The debate is, whether to retain the TVIS and change the switching point to a more suitable RPM using my aftermarket ECU, OR Replace the whole TVIS setup with a phenolic spacer (which also insulates the intake plenum from the head to keep the air temps down): http://www.atsracing.net/phenolicspacer.htmSome people have said that they have never seen a TVIS-equipped 3SGTE put out more than 220kW or so, even with big turbos (I need convincing to believe that the restriction of the TVIS shaft is that extreme). Others have said that they still have the TVIS fitted and they have roughly the same amount of power that I'm aiming for. I would like to keep the TVIS, but I need to be sure before the engine goes back into the car permanently such that access to the TVIS becomes difficult. To put things into perspective, with hypothetical numbers, consider these 2 scenarios: A) 280kW peak power B) 260kW with 5% more torque down low compared to 'A' ^I would prefer scenario B.
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artymr2
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RE: robk's MR2 Turbo
2010/07/15 01:22:39
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quote:
Yeah I've seen plenums that have been sand blasted then clear coated, and they look really nice, so that's probably what I will do.
The HPC coatings also look unreal IMO, not fully bling like chrome but very classy, and it insulates. Just look at MANDALAYs bits for inspiration!! quote:
The onboard logging in my ECU will do more than just display two temperature numbers...it will be able to log them so a graph can be drawn in excel etc, which is the best way to visualise stuff like that.
wow, thats pretty cool. Will be interesting to see all the data from a run or track outing etc. Cheers
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MANDALAY
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RE: robk's MR2 Turbo
2010/07/15 01:33:38
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Have you removed the factory 7 inch comparment fan ?
If so use the factory temp ECU.
Put the factory plug to your fan. This way when the engine bay gets hot it will turn on and then also get your Aftermarket ECU to send a signal to pin 8 on the temperature ECU so as to turn on at what ever parameter you want i.e coolant temp air temp etc.
One word of caution when chasing those numbers i hope you have a real way of detecting knock.
Also the MR2 SW20 HAS an old style knock sensor that the racing cars in Japan dont use.
They use a Wide band
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MANDALAY
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RE: robk's MR2 Turbo
2010/07/15 01:36:47
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Oh BTW they are Toyota units but its a bit secretive
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robk
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RE: robk's MR2 Turbo
2010/07/15 01:43:19
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quote:
Originally posted by MANDALAY
Have you removed the factory 7 inch comparment fan ?
If so use the factory temp ECU.
Put the factory plug to your fan. This way when the engine bay gets hot it will turn on and then also get your Aftermarket ECU to send a signal to pin 8 on the temperature ECU so as yo turn on at what ever parameter you want i.e coolant temp air temp etc.
One word of caution when chasing those numbers i hope you have a real way of detecting knock.
The MR2 SW20 HAS an old style knock sensor that the racing cars in Japan dont use.
They use a Wide band
Is the stock 'engine compartment fan' just the one on the stock A2A intercooler? If so, yes that's gone. I know nothing about the cooling fan ECU, but I may be able to do what you have described. My Adaptronic e1280s ECU has very clever knock detection with closed-loop ignition timing to retard the timing when knock is detected. The ECU also has closed-loop adaptive lambda control. The knock detection on the e1280s (still being developed right now) will have 'masking' to ignore anything that happens well before or well after TDC. It will also provide a separate knock count for each cylinder by considering the crank/cam angle throughout the 4 stroke cycle.
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2hardtop
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RE: robk's MR2 Turbo
2010/07/15 17:58:01
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I think you'll prefer option B since you'll be driving it in traffic often but either will be OK. Its not like it'll be some cantankerous mule like a carby-fuelled beast. swapping in a phenolic spacer later on isn't a big deal. I'd see how you go with T-VIS first especially considering that you'll be running in the new motor for a week or 2,I'm sure you'll find some free time available in a couple of months to swap it if you think its what you want. 
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kameleon
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RE: robk's MR2 Turbo
2010/07/15 20:39:06
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we sandblast all our alloy stuff here after we have left it sitting in a frends bath (to remove carbon etc) it comes out so well i wish i had bought a used caldina inlet manifold over the brand new item i have (Darrens came up like new besides one nick....)
clear coat or "alloy" look paint/2 pac looks fantastic/clean and is easy to maintain. Polished stuff etc is harder to maintain imo.
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robk
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RE: robk's MR2 Turbo
2010/07/15 21:08:31
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quote:
Originally posted by 2hardtop
I think you'll prefer option B
since you'll be driving it in traffic often
but either will be OK.
Its not like it'll be some cantankerous mule like a carby-fuelled beast.
swapping in a phenolic spacer later on isn't a big deal.
I'd see how you go with T-VIS first
especially considering that you'll be running in the new motor
for a week or 2
Thanks for the advice Greg. quote:
Originally posted by 2hardtop
I'm sure you'll find some free time available in a couple of months
to swap it if you think its what you want.
I see what you did there haha, and I'm not gonna explain it on here right now [:P] Regarding the cleaning of the intake plenum etc, I've been inspired by Mandalay and I think I'm going to get my intake plenum and the heat shield at the front of the engine bay ceramic coated! It's not cheap, but it's a small amount compared to everything else I've done on the car. It would look awesome along with the fully ceramic coated turbo too.
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artymr2
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RE: robk's MR2 Turbo
2010/07/15 22:46:08
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Polishing alloy is also very labour intensive in the prep to get a perfect finish. The motor we removed had a polished rocker cover, throttle trumpet and turbo hot pipe. It stayed at a high level of polish after 3 years or so of use.
Cheers
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robk
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RE: robk's MR2 Turbo
2010/07/15 22:53:03
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Well, if I go down the ceramic coated path, it will have a similar appearance to polishing, but I imagine it will be very durable.
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artymr2
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RE: robk's MR2 Turbo
2010/07/15 22:55:01
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I believe its very durable, plus it insulates, and looks awesome.
its a win win win!!
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MANDALAY
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RE: robk's MR2 Turbo
2010/07/15 23:38:56
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Just remember to mention my name Angelo at HPC :)
One point it works out even cheaper if you get all your bits together instead of sending him parts one at a time.
ASS REMEMBER THE NUTS AND BOLTS.
Intake is a good idea as your more likely to heat soak more than my engine because your plenum is aluminium and has no rubber isolater on the plenum.
The Beams has a rubber isolator to avoid heat soak and is made of steel
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