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After 3 years my 7 is back on the road, i have to say that the 40mins spent at the MOT station felt like the longest 40mins ever. Only one advisory, emmissions were way above the legal limit at nearly 9.5Co (the limit being 4.5!) the tester turned the mixture down by hand with no eqipment and got a reading of about 3.5 and she doesnt run half as well. i know what i'll be doing this weekend!

Just out of interest, is it common for our TR7s which run sports exhaust and free flow air filters to run so rich at idle and what are others getting on the emmission side of things?

Rob

Hi Rob,

Congratulations mate [:D]

You will probally have to change the needle's in your carbs, i diid when i was running a similar set up years ago, i think they were 'BAL' but i am sure someone on here will confirm that.
The other problem can be 'waxstat' jets

Cheers John

LIVE LIFE A QUARTER OF A MILE AT A TIME!
1979 3.5 FHC(STATUS PENDING!!)

1982 2.0 DHC NOW A 4.6,ON THE ROAD NOW KICKING AR5E !!!!

Carbs are tricky things to tune by guess. I recently bought a LM1 air/fuel analyser & it made the tuning process so much easier. They aren't particularly cheap but it would be easy to spend a lot more on dyno tuning & you can always sell it on when you're done.

Congrats on getting the car back on the road.



The map: http://tinyurl.com/wedgemap . The blog: http://www.forum.triumphtr7.com/topic.asp?TOPIC_ID=8548

Well done Rob

All the hard work, sleepless nights, and all the money spent has paid off.



All the Gear, no idea

Congratulations, well done indeed [:)]
If set up properly (so with correct meedles), it should run pretty nicely at idle with a CO level of around 3%.

<center>
<font color="blue"><i>1980 TR7 DHC (my first car, now restored and back on the road)
1981 TR7 FHC Sprint (better known as 't Kreng)</font id="blue">
<b>[url="http://www.tr7beans.blogspot.com/"]<u><b><font size="2"><font color="red">My Weblog</font id="red"></font id="size2"></b></u>[/url]</b></i></center>

Well done Rob,

Look forward to seeing you and the car at Glen's do on the 2nd.

Cheers
Ian

Ian Freeman
1979 TR8 DHC California car that never crossed the pond, started life as KDU 315V.
1962 Triumph Courier

Cheers Ian, yup i'll definately be there. Must set those carbs up though, i don't want to break down like i did last time!

<blockquote id="quote"><font size="1" face="Century Gothic, Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">You will probably have to change the needle's in your carbs, i did when i was running a similar set up years ago, i think they were 'BAL' but i am sure someone on here will confirm that.<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">Triumphtune recommend BAL for this type of upgrade on the 8V. For the 16V it is BAE. I suggest you check that both jets are the same depth from the bridge - the MOT person may not have wound them up by the same amount. Whilst the dashpots are off to do this, take out the needles check the needle type - BAL or BDM etc, etc.

Cheers guys, i really appreciate everyones help on my sprint conversion project.

You're right Jeff, the MOT monkey did wind them up unequal amounts! it ran like a bag of nails after he made it pass the emissions test. I balanced the carbs yesterday and they were out by 1.5points on the gunsons 5 point carb balancing scale, when they were both equal i then attempted to adjust the mixture. Bearing in mind she was running 9.2 - 9.5 co, she was now running 1.3 which was way too lean. I got it up to 3.5 but gave up as i didn't know if the bridges were equal. job for tonight. Thanks for the Co figure beans!

Rob.

Well done Rob its great when there road legal isnt it.[:)]

nice one..... will have to get bal needles for mine i think..... and will find out tomorrow if mine went through its mot retest when i call back to the garage........... wish me luck....... lol


the project at birth, watch it evolve...I hope...

<blockquote id="quote"><font size="1" face="Century Gothic, Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by PeterTR7V8</i>

Carbs are tricky things to tune by guess. I recently bought a LM1 air/fuel analyser & it made the tuning process so much easier. They aren't particularly cheap but it would be easy to spend a lot more on dyno tuning & you can always sell it on when you're done.

<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">

so very true ,

with right tools a complete idiot can set the mixture right in couple of minutes.

it takes some experience and trial&error method when working without tools.

LC-1 is even cheaper around 200$ if you have laptop, LM-1 is complete tool in itself no additional equipment required so its more expensive.

i would suggest that you find a local garage that has is , or some kids that fiddle around their cars, buy them a drink for that 3 and a half minutes while you loan the equipment [:D]

<blockquote id="quote"><font size="1" face="Century Gothic, Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Marko</i>

with right tools a complete idiot can set the mixture right in couple of minutes.
<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">

Hey!! I may be an idiot but I'm far from complete. [:)]



The map: http://tinyurl.com/wedgemap . The blog: http://www.forum.triumphtr7.com/topic.asp?TOPIC_ID=8548

Marco,

What is the LM-1 tool ?????

Forget that Marco, its amazing what you can fine when you use google.[:D]