'80 13BT Series 1

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Chud
Posts: 887
Joined: Fri Apr 01, 2011 7:35 am
Location: North Dorset, UK

'80 13BT Series 1

Post by Chud » Sat Oct 19, 2013 10:26 am

First off, Dave - she's SORN'd for the winter. With that done, it's time for a spruce up. Well my kind of spruce up anyway - make it fastererer. You never know, she might get a wash too. :lol:

I've had a good 2+ years of trouble free fun out of the current S4 13BT that's in her and considering I bought it sold as seen on the floor of a storage container it has done rather well and not skipped a beat (apart from when the missus sat on the hand controller and buggered up the injector phasing :roll: ). Anyway, over the summer I've noticed an increase in water consumption - it always used a bit due to a weeping brazed joint on the radiator going bad but it got to the point where a top up was required every journey.

This has started to get a little boring so the time has come to pull it out, and while we're at it we just as well 'tidy up' them ports. :twisted: -turbo-

Also on the winter jobs list is to reconfigure my intercooler/radiator setup as on a hot day I suffer quite bad heat-soak with inlet temps up in the 40's, those of you who've seen my SA in the flesh know what stupendous sized intercooler I've got so these temps just won't do. :roll: A couple of the guys in the US have tried the V mount setup which I've always liked, and the fact I have a talented and enthusiastic TIG welder at my disposal means it'd be rude not to give it a crack. This will mean my guy building a custom radiator and modifying the intercooler with brackets etc to suit. I will also be moving the oil cooler as I'm sure it's not doing my airflow any favours.

If I get time I'd also like a custom fuel tank made with an internal swirl pot but I'll see how it goes with a view to being back on the road for Spring.

For those of you not familiar with my layout as it stands here it is...

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Engine out within next two weeks then there will be a gap while it gets refreshed and then the fab work starts.
instagram: tymboooo

1980 series 1 RX7
1983 series 2 RX7
1975 RX3 Coupe
1959 VW Splitscreen Kombi "The Queen"
1971 VW Adventurewagen
1966 Porsche 912

codge
Posts: 2602
Joined: Fri Apr 01, 2011 11:41 am
Location: South Yorks.

Re: '80 13BT Series 1

Post by codge » Sat Oct 19, 2013 1:03 pm

th: Tx Tim.

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ian65
Posts: 5653
Joined: Wed Mar 30, 2011 12:11 am

Re: '80 13BT Series 1

Post by ian65 » Sat Oct 19, 2013 6:55 pm

looking forward to reading this build...... got proper attitude this car....... keep us updated pls bud 0-0
1986 Series 3 13B Turbo II
http://rx7fb.com/viewtopic.php?f=2&t=2400
1992 Peugeot 205 1.9 GTI
1975 Honda SL125 Street Scrambler

Chud
Posts: 887
Joined: Fri Apr 01, 2011 7:35 am
Location: North Dorset, UK

Re: '80 13BT Series 1

Post by Chud » Sat Feb 01, 2014 9:03 pm

Well due to general life/busy business/weather/house extension planning I've not had a lot of time to get going but today we finally sorted our lives out so after collecting 1000 bricks with some helpers of mine..
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....we could get going getting the keg out of the SA with the help of Matty.

Poor photos as phone camera is goosed but you get the idea....

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Off to Era's it goes.


Phase 1 complete.
instagram: tymboooo

1980 series 1 RX7
1983 series 2 RX7
1975 RX3 Coupe
1959 VW Splitscreen Kombi "The Queen"
1971 VW Adventurewagen
1966 Porsche 912

Chud
Posts: 887
Joined: Fri Apr 01, 2011 7:35 am
Location: North Dorset, UK

Re: '80 13BT Series 1

Post by Chud » Mon Feb 10, 2014 10:13 pm

Autopsy complete. :shock:

So as expected the water seals throughout the keg were not in good shape and based on its thirst for water prior to the strip down then this was as no surprise.

The other expected worn parts were the rotor and stat bearings - for those that remember back two years when this motor was put into Nev you may recall the failure of one of the oil cooler lines. At the time I counted my lucky stars that I still had an engine that even spun let alone ran, but always had a hunch that when it finally came to this time, we'd find tired bearings.

What I wasn't banking on was poor housings, both suffering a fair amount of flakey chrome so am on the lookout for a set of S4/5 housings in good condition.

The rest is stuff I'd also expected from an engine that was subject to my first 13bt conversion and in the process had a lot of mistakes learned upon. In the grand scheme of things it's done well, and survived being driven by Rammo so all in all a heroic effort. :lol:

So, onwards and upwards. Time to get parts. Some pics….

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instagram: tymboooo

1980 series 1 RX7
1983 series 2 RX7
1975 RX3 Coupe
1959 VW Splitscreen Kombi "The Queen"
1971 VW Adventurewagen
1966 Porsche 912

Lucky
Posts: 2686
Joined: Mon Nov 07, 2011 8:30 pm
Location: Worthing, UK

Re: '80 13BT Series 1

Post by Lucky » Mon Feb 10, 2014 11:30 pm

let Rammo drive it :shock: Amazing it ran at all :lol:

Those look like the teak fingers of Uncle Era pointing out ugly bits there :D

Chud
Posts: 887
Joined: Fri Apr 01, 2011 7:35 am
Location: North Dorset, UK

Re: '80 13BT Series 1

Post by Chud » Wed Feb 12, 2014 8:05 pm

Housings sorted by Uncle Timmy (who else) so massive thanks to him for taking the time to hunt through his vast pile of housings to find a couple of good-uns. Need to order bearings from Mazda Christchurch tomorrow and that'll be me nearly there for bits I had to get. 8-)
instagram: tymboooo

1980 series 1 RX7
1983 series 2 RX7
1975 RX3 Coupe
1959 VW Splitscreen Kombi "The Queen"
1971 VW Adventurewagen
1966 Porsche 912

Chud
Posts: 887
Joined: Fri Apr 01, 2011 7:35 am
Location: North Dorset, UK

Re: '80 13BT Series 1

Post by Chud » Sun Feb 16, 2014 7:39 pm

Further developments, whilst waiting for parts I thought I'd have a closer look at the turbo as it's always been a bit of a mystery regarding it's specs. In short, it's a hybrid of an S5 turbo modified by turbonetics utilising the hot side of the S5 and incorporating a bigger cold side. Being in a bitty of a bored state and also pestered by Rammo I took it apart and got the callipers out to suss what size the turbine wheels were.

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The trouble is, when you look closely at something, you tend to see things you don't want to. :cry:


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So that'll be a cracked waste gate port then., Brilliant.

Anyway, on the upside it turns out (according to Rammo) the turbo is a T04E equivalent which'll do me for the moment. All I gotta do is weld up that crappy internal waste gate and introduce and external one to my manifold. And when I say 'I', I mean someone else with more metalwork talent than myself. :roll:

Here's a graph for my turbo. I've no idea what it means.

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instagram: tymboooo

1980 series 1 RX7
1983 series 2 RX7
1975 RX3 Coupe
1959 VW Splitscreen Kombi "The Queen"
1971 VW Adventurewagen
1966 Porsche 912

TOOL
Posts: 2513
Joined: Thu Sep 01, 2011 10:30 am
Location: Var, France (ex NZ, ex UK)

Re: '80 13BT Series 1

Post by TOOL » Sun Feb 16, 2014 8:23 pm

I've never seen a hot side in good condition yet.

Par for the course at this age.
Back in sunny France

Chud
Posts: 887
Joined: Fri Apr 01, 2011 7:35 am
Location: North Dorset, UK

Re: '80 13BT Series 1

Post by Chud » Sun Feb 16, 2014 8:25 pm

True that.
instagram: tymboooo

1980 series 1 RX7
1983 series 2 RX7
1975 RX3 Coupe
1959 VW Splitscreen Kombi "The Queen"
1971 VW Adventurewagen
1966 Porsche 912

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