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5S Block
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I had always assumed you guys were going to stick to the stock 3S block to stay within 2.0L displacement for rally regulations.  Then, in the Q&A video you said firmly, again, that Binky would be a road car and wouldn't be allowed in any rally races.

So that made me wonder if you'd considered using a 5S-FE block.  I've heard of people using it with the 3S crank, along with mostly other 3S parts, just because the 5S is a tougher block that will handle more boost.  Another option that I've heard of a few MR-2 guys doing is build a 5S-GTE which is mostly a 3S-GTE but includes the 5S crank and bumps displacement up to 2.2L.  Extra low end torque doesn't sound at all bad for a road car.

Here's some info on the best S series engine that toyota never actually made*

http://www.mr2oc.com/61-3sgte-turbo/395274-how-build-5sgte.html

http://www.toyotanation.com/forum/103-camry-3rd-4th-gen-1992-1996-1997-2001-1st-gen-solara-1999-2003/301363-how-5sgte-3sgte-cylinder-head-swap-your-5sfe-block.html

 

*Ok I think they might have made a few for racing supras.



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I think they used the 3sgte cause it was in a car they had lying around...!

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It was a car that they had driven many miles in. It got rear-ended and written off. They decided to put its mechanicals into an unsuspecting Mini shell.... I get the impression that it might have been easier and quicker to repair that bent Celica shell. But Nik 'n Rich don't do 'easy'.....

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And it wouldn't have been near as much fun to watch!

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Acually, Nik did repair the damaged Celica after buying it back from the insurance company and used it for a few months before switching to his current steed. But you're right, we had a complete engine in stock, so to speak, so we're using that.

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Alas, I was really hoping for a (few) engine build videos.

 

Though just in case it wasn't clear, I *do* think you should use your 3S-GTE...just perhaps only the top end of it.

If you ever decide to rebuild your 3S.  It looks like the 5S-FE was in the UK on 90s Camrys, so you might be able to good deal on a block & crank from one of those.  I've heard that both blocks use the same mounts.  I don't know about precise external dimensions though, and that's a serious concern for Binky's under-hood, uh err, under-bonnet space.



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Bad Obsession wrote:

Acually, Nik did repair the damaged Celica...


 Although easily confused confuse I did wonder about the pics I've seen with the arse end stuffed and then Ep 1 it looks fine when you're hooning around the field!

Anyhoo, swapping the block willy nilly is going to do nothing for binkys originality and authenticity!

smile



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Forsh wrote:
 

Anyhoo, swapping the block willy nilly is going to do nothing for binkys originality and authenticity!

smile


 

Haha!  Good point!  I seem to recall him wanting to keep the car as original as possible.

biggrin



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KneeDeep, I've always wondered how people know this type of stuff, have you/they done the research and testing of the parts themselves, or are you/they privy to some internal engineering department source who was involved in the design phase of the parts? Not having the time or finances to test and experiment, I find myself feeling a little inadequate in this department and unsure where to look for education or information on the subject.



-- Edited by GrayRaceCat on Tuesday 6th of March 2018 08:52:49 PM

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GrayRaceCat wrote:

KneeDeep, I've always wondered how people know this type of stuff, have you/they done the research and testing of the parts themselves, or are you/they privy to some internal engineering department source who was involved in the design phase of the parts? Not having the time or finances to test and experiment, I find myself feeling a little inadequate in this department and unsure where to look for education or information on the subject.


 

In my case, I'm a 6th Gen Celica enthusiast.  I have a 99 st204 usdm fwd, the only acceleration I have is through gearing.  All my research is years of accumulated info from internet articles and forums and learning what I can from talking to the mechanics I take my vehicles to, they usually are ok to explain stuff, and even show you stuff if it looks like you're interested (* I'm in the usa so there may be cultural differences in other countries).  I feel you on the "find myself feeling a little inadequate in this department".  I work on my own car a bit right now, but I wouldn't by any means call myself a proficient mechanic.

First time I heard of a guy building the 5S-GTE was I think someone in Australia.  Sounded like a really cool best of both worlds idea, but sounded really complicated with a fair bit of fabrication.  Years later, at a party, an MR2 guy I know mentioned the 5S-GTE and told me that a few MR2 guys build them and it isn't that difficult.  He told me to look it up and that's where I found those links in my first post.

here's a dyno run of a 5S-GTE MR2:

https://www.youtube.com/watch?v=o-maf6PM1V8

Later on I found out that this legendary 6th gen was powered with it as well:

http://www.6gc.net/celicas/1998-gt-hatchback-7148

 

Also: a long time ago I read that most racing mk4 supras would ditch the 2JZ-GTE inline 6 and instead go for the 3S-GTE for the simple reason that it's lighter, and it could meet their hp goals.   Sorta makes sense: If a 3S-GTE @ (speculation) 600-800bhp performs just as well on the circuits you'll be racing as a 1500bhp 2JZ, while being lighter.  More recently I found an article talking about these racing supras and it monetioned they used stroked crank-shafts to get to 2.2L (sounded familiar), but then some went back to just the 2.0L cranks (presumably more rev-happy, but less low end torque).  Which I guess makes sense again, in a professional race team, I would guess you pay your mechanics a salary, so them having to work to keep the car going is no biggie.

I also heard somewhere, probably 6gc.net, that if you're going to rebuild a 3S-GTE always use a 5S block, even if you're not using the 2.2L crank, just because the block is stronger, especially so if you can get the one from 98+, and if you're tearing down the engine anyway...

I get the impression that engine builds are a little more of a US thing to do than in other parts of the world, but they showed Sarah's work on that engine head, so that's why I thought it could be something they'd do.

So that's the story of where I got the information/leads on all this specifically.

 



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