www.imoc.co.uk Forum Index
 AlbumAlbum CalendarCalendar FAQFAQ SearchSearch MemberlistMemberlist Legal NoticeLegal Notice IMOC 1/4 Mile1/4 Mile Table Knowledge BaseKnowledge Base   RegisterRegister 
 GarageCommittee GarageGarage  SubscriptionPremium Membership  ProfileProfile   Log in to check private messagesLog in to check private messages   Log inLog in 
Calendar 
6spd Mk1 Turbo in the Toyota Sprint Series
Goto page Previous  1, 2
 
Post new topic   Reply to topic       www.imoc.co.uk Forum Index -> MR2 MK1 1984-1989 NA & SC
View previous topic :: View next topic  
Author Message
kaiowas




Joined: 07 Jun 2005
Posts: 1942
Location: Norfolk
Feedback Score: 10

1985 Toyota MR2 Mk1a

PostPosted: Thu Sep 29, 2016 1:54 pm    Post subject: Reply with quote Reply with quote including images

I had arrived at this wheel setup some years ago before I even thought about the 6 speed option (My original intention was to use 225/45/13 R888s but these are in short supply now and the size hasn't been continued with the new R888-R). It's just taken me a while to bring it all together

My motivation was that I needed wider tyres for more grip but didn't want to increase the gearing given that at the time I was using a standard 5 speed and had significantly less power. Dropping to a 13" was the only was to achieve this as any wider 15" tyres were too tall and wide 14s aren't really available. Lowering the whole car without screwing up the geometry by virtue of the smaller overall diameter was an added bonus.

With the current setup I may find that I'm actually under geared now on some faster tracks, particularly once I turn the boost up, will have to see how it goes.

Brake wise I'm running standard mk1b up front and mk2 '22V' calipers on mk1b front discs at the rear. Carbotech pads all 'round.
Back to top
User is offline 
kaiowas




Joined: 07 Jun 2005
Posts: 1942
Location: Norfolk
Feedback Score: 10

1985 Toyota MR2 Mk1a

PostPosted: Sat Jan 28, 2017 3:41 pm    Post subject: Reply with quote Reply with quote including images

Had the turbo setup mapped properly yesterday which means I can now run full boost.

Its now making 267hp at 1bar which is a fair step up from the 208hp at 0.6 bar I had last season and a long way from the 160 or so I had with the SC.
Back to top
User is offline 
Lauren
IMOC Committee



Joined: 13 Dec 2004
Posts: 38548
Location: Greater Manchester
Feedback Score: 0



PostPosted: Sat Jan 28, 2017 4:55 pm    Post subject: Reply with quote Reply with quote including images

That is impressive. How long do you think it will last?
_________________
1985 AE86 Sprinter Trueno GT-Apex [lover]
2013 GT86 Miltek Exhaust, decat/overpipe Injen Induction. Volks Racing TE37s & TRD Aero Fins, Mega sounds. TEIN Street Flex 5/6kg, TEIN EDFC Active Pro. Tuning Developments Remap [lover]
Back to top
User is offline 
Ben
Premium Member



Joined: 01 Aug 2008
Posts: 3019
Location: Oxford(ish)
Feedback Score: 5

1990 Westfield Sei

PostPosted: Sat Jan 28, 2017 5:21 pm    Post subject: Reply with quote Reply with quote including images

Lauren wrote:
That is impressive. How long do you think it will last?


[Laughing]

Impressive numbers Phil. Am sure I'll see it at one of the Javeloyota rounds this year [Smile]
_________________
The Plastic Fantastic:
http://www.imoc.co.uk/forums/viewtopic.php?t=168307&start=60
Back to top
User is offline 
kaiowas




Joined: 07 Jun 2005
Posts: 1942
Location: Norfolk
Feedback Score: 10

1985 Toyota MR2 Mk1a

PostPosted: Sat Jan 28, 2017 5:41 pm    Post subject: Reply with quote Reply with quote including images

Lauren wrote:
That is impressive. How long do you think it will last?


Well there's a few non-OEM bits on it now and it has prior naval association so it'll probably fall apart after five minutes or so.

On a more serious note there's no reason to believe it will have any particular issues. It's not exactly crazy power for a boosted 1.6 and the gearbox is probably the weak point.
Back to top
User is offline 
PW@Woodsport
IMOC Affiliated Company



Joined: 14 Dec 2004
Posts: 7586
Location: durham
Feedback Score: 30



PostPosted: Sat Jan 28, 2017 6:41 pm    Post subject: Reply with quote Reply with quote including images

I personally don't think you will see a gearbox issue, I've yet to hear of anyone blowing up one of my 6 speeds, some of which are bolted to SC motors.
_________________
Back to top
User is offline 
kaiowas




Joined: 07 Jun 2005
Posts: 1942
Location: Norfolk
Feedback Score: 10

1985 Toyota MR2 Mk1a

PostPosted: Mon May 15, 2017 10:51 pm    Post subject: Reply with quote Reply with quote including images

Famous last words there Paul! First round didn't end very well - broke the gearbox after 1 run! Nothing to do with the power or anything though, I'd rebuilt one of them with the longer 6th from the Celica 140 'box and managed to neglect to install the snap ring that locates the 5th/6th gear selector hub. Once under load the hub moved down the shaft, destroyed the hub and the 6th gear and eventually left me with no neutral. Live and learn! I was off to Spa the next day as well so had to do a double-quick gearbox change.

This weekend was round 2 at Croft which went considerably better. Somehow I managed to win the whole damned thing (Adrian missed this round and the two Celicas that should have been quicker than me both had mechanical issues) making a 4A powered mk1 the first MR2 to win a round of TSS outright. It even motivated me to process some video of my best run for the first time since the turbo was fitted:

https://youtu.be/V6qQbfWxEJQ
Back to top
User is offline 
PW@Woodsport
IMOC Affiliated Company



Joined: 14 Dec 2004
Posts: 7586
Location: durham
Feedback Score: 30



PostPosted: Tue May 16, 2017 6:16 am    Post subject: Reply with quote Reply with quote including images

Ah that is an easy mistake to make I guess, it just makes you build the next one better [thumleft]
Back to top
User is offline 
aw11rally




Joined: 31 Dec 2008
Posts: 763

Feedback Score: 5

1984 Toyota MR2 Mk1a

PostPosted: Thu May 18, 2017 8:28 am    Post subject: Reply with quote Reply with quote including images

Correct me if I'm wrong, was that 0-60 in 4sec and 0-90 in 8sec?

What an awesome machine you've built.
Back to top
User is offline 
kaiowas




Joined: 07 Jun 2005
Posts: 1942
Location: Norfolk
Feedback Score: 10

1985 Toyota MR2 Mk1a

PostPosted: Thu May 18, 2017 8:41 am    Post subject: Reply with quote Reply with quote including images

According to the data logger, I think the best launch of the day was 4.5 to 0-60
Back to top
User is offline 
kaiowas




Joined: 07 Jun 2005
Posts: 1942
Location: Norfolk
Feedback Score: 10

1985 Toyota MR2 Mk1a

PostPosted: Thu Aug 17, 2017 8:23 pm    Post subject: Reply with quote Reply with quote including images

The faded orange was getting a bit much so I decided to try my hand at vinyl wrapping. Bought some appropriate tools and 10m of Avery Supreme gloss orange and set to work.

First off, remove all of the stickers to show just how much it's really faded:



Over time most of the old panels have been showered with grinder sparks leaving nice rust stains and general rougness to the panels. Rather than have to deal with this, some bolt on panels were replaced, others were rubbed down and given a quick coat of paint to cover up the massive contrast variations that would show through the very thin vinyl.

These first couple of panels were wrapped off the car to give me a chance to decide it was all too hard and give up. The louvres on the engine lid were tedious as anything!


All went ok though, so time to start for real. No going back now...


Biggest panel on the car done


Working down the passenger side




Similar story down the driver side, complicated by a fibreglass front wing where the paint reacted massively meaning I ended up prepping and using a spare one




Overall I'm happy with how it went. It's not a perfect job but for a first attempt and for a race car it's plenty good enough. Most of the imperfections are due to the underlying panel prep not being good enough with only a couple of minor areas where the wrapping isn't up to scratch (mostly minor creases where I could quite get rid of excess material). It was all part of the learning and if I did it again I reckon it's be pretty much spot on. The hardest parts of the car which were really worrying me were the ends of the rear quarters where the panel has some pretty tight curves in 2 dimensions and in the end those bits went really well.

A couple of nice shots before the stickers went on:




And one of the sponsor stickers:


Next plan is to sort out the rusty header rail across the top of the windscreen. This was going to mean having the screen out. This has now become a bit more pressing as the rust has caused the screen to start to crack at the top in the last week or so. I'm sprinting at Anglesey this weekend and I expect the crack to be right down the screen by the time we're done, it's likely that the journey up on the trailer will be enough to do it! Once I've got the header rail repaired the plan is to wrap all of the black bits with a gloss metallic black.
Back to top
User is offline 
jimi




Joined: 14 Dec 2004
Posts: 2047
Location: Kingdom of Fife
Feedback Score: 0

1988 Toyota MR2 Mk1b

PostPosted: Sat Aug 19, 2017 10:41 pm    Post subject: Reply with quote Reply with quote including images

Nice job, that looks great! [Applause] well worth the effort.
Back to top
User is offline 
pistol pete
IMOC Moderator



Joined: 11 Feb 2008
Posts: 6958

Feedback Score: 27



PostPosted: Sun Aug 20, 2017 5:34 am    Post subject: Reply with quote Reply with quote including images

Having seen it in the flesh yesterday you did a top job buddy
_________________
MR2 Sprint zombie outbreak response vehicle
https://www.facebook.com/pages/Zombie-Sprint-Page/1548040272127049
https://www.youtube.com/channel/UCNBrEdG4xcH5ds-qbox0FwQ
Back to top
User is offline 
Display posts from previous:   
Post new topic   Reply to topic       www.imoc.co.uk Forum Index -> MR2 MK1 1984-1989 NA & SC All times are GMT
Goto page Previous  1, 2
Page 2 of 2

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group