Triumph Spitfire, 1500inj with 4x42mm throttle bodies
Triumph Spitfire, 1500inj with 4x42mm throttle bodies
despite some Triumph specialists, who said it couldn’t be done.
I had to make a 36-1 pickup on the crank, nothing off the shelves by Triumph for this.
I disconnected the mechanical fuel pump and used the normal fuel line as return.
An extra fuel line with 2 connections on the fuel tank and a 4 bar fuel pump.
I basically used 4 throttle bodies on Weber intakes with Weber air-filters
and after the manufacturing of the 36-1 pickup and sensor it was a down-hill battle of putting
parts on the car and wire them to the computer.
The project started in the start of 2008 and was finished after 5 months,
basically because I was driving around the first 2-3 months with 2 carburetors and
having the MS logging more and more data.
Also I had 2 small band lambda injectors installed and after installing the electronic injection
I waited to long for ordering a wide band sensor and get the car running smooth.
The ignition is a basic table that came with the computer, working with the old 12v spark coil and spark distribution.
I simply made some runs and heard the car fire (heavy sound) and put the ignition map 3
degrees later, till the nasty sound was gone.
It isn’t the most expensive car and it isn’t the fastest now, but I still enjoy working on it and I
am looking for next month for the APK (Dutch yearly check).
working on the VE-table now;
one happy customer;
-
- MegaSquirt Newbie
- Posts: 2
- Joined: Thu Aug 28, 2008 9:15 am
Re: Triumph Spitfire, 1500inj with 4x42mm throttle bodies
Re: Triumph Spitfire, 1500inj with 4x42mm throttle bodies
seems to be the ultimate poor mans sports car with a lot of potential
a turbo would be nice..
but driving at 100km/uur on the highway, you already starts to wonder when it will take off
and fuel isn’t for free in Holland…
well, i don't have one..sprint_turbo1 wrote:I am interested in how you setup the warmup air feed.
I see that you have a balancing pipe across all 4 ports which is same I have done, are you using a solenoid or pwm idle valve?
because i don't need it right now, starting in the morning you need to give a little throttle if it fires up,
but after keeping it spinning at 1.500 voor 5 seconds, it just idles at 700 rpm the rest of the day.
idles at 75kpa, drops below 20kpa when slowing down on the engine.
i did rebuild one of these;
this one is completely shut down at 0volt, so ideal for a PWM idle control mod.
Re: Triumph Spitfire, 1500inj with 4x42mm throttle bodies
I am in the final stages of assembling my Megasquirt Conversion on my 1980 Triumph Spitfire 1500, hopefully for a first test next weekend.
It has
Stage 3 head
Fast road 83 Cam
40Thou overbore
4-2-1 manifold
EDIS ingnition
40mm Weber throttle bodies
I have tested the EDIS running it in conjuction with the the original carbs and all seems OK.
I was wondering if you could send me your configuration files (they include the maps don't they?) so I would have a base to work from. I am paranoid about melting something by running it too lean so would like a known running config to work from.
Thanks Moe.
Re: Triumph Spitfire, 1500inj with 4x42mm throttle bodies
Code: Select all
100kPa 199 183 160 174 205 219 242 236 201 192 186 185
97kPa 156 139 120 131 157 184 208 178 152 143 136 138
94kPa 110 107 104 107 122 147 168 144 123 130 111 115
91kPa 80 79 86 94 108 128 133 114 87 96 98 100
88kPa 63 67 71 87 94 109 113 96 79 82 86 90
84kPa 61 59 56 75 81 91 90 80 73 73 75 73
80kPa 49 47 43 64 67 77 78 73 64 63 65 65
75kPa 39 39 40 49 60 70 70 63 53 49 54 54
70kPa 40 36 32 35 43 51 53 46 36 34 39 35
60kPa 38 32 29 23 20 26 27 23 19 19 18 19
40kPa 9 22 24 17 12 9 7 7 6 7 8 9
20kPa 3 3 3 3 6 6 5 5 3 3 3 3
0.5 0.8 1.1 1.4 2.0 2.6 3.1 3.7 4.3 4.9 5.4 6.0
6.0 = 6000rpm
put this into your VE-table
and adjust your fuel requerement untill it starts..
if it doesn't start, you'll need more fuel,
if it smells like CO, you'll need less..