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| thesaabologist | Posted - 27 Jun 2012 : 23:30:26
Assuming I had all the parts incl carb, jets, manifold, linkages etc, how many hours would such a conversion take?
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1974 Sonett III
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| 11 L A T E S T R E P L I E S (Newest First) |
| thesaabologist | Posted - 07 Jul 2012 : 08:22:21
quote:
Originally posted by GeoffC
I had thought of that but two reasons came up -
1. The diameter of the std pancake isn't really big enough to feed the twin choke so was anticipating increasing that in a new design.
2. There are not many original filters left so I thought it would be a shame to butcher one and then not be able to return to original spec.
However you could try it - which carb are you putting on anyway mines a 28/36 so there are a bit tall.
Diameter is a key consideration. The carb I have is a 32/36DGV, I have enough room heightwise but have not measured relative to pancake diameter.
A solution which is more drastic (that I have seen applied) is to modify the bonnet by cutting a slot in the front of the buldge so effectively there is an air-ram.
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1974 Sonett III
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| GeoffC | Posted - 07 Jul 2012 : 00:01:14
I had thought of that but two reasons came up -
1. The diameter of the std pancake isn't really big enough to feed the twin choke so was anticipating increasing that in a new design.
2. There are not many original filters left so I thought it would be a shame to butcher one and then not be able to return to original spec.
However you could try it - which carb are you putting on anyway mines a 28/36 so there are a bit tall. |
| thesaabologist | Posted - 05 Jul 2012 : 23:38:52
why not just modify the standard filter and use that?
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1974 Sonett III
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| GeoffC | Posted - 05 Jul 2012 : 09:40:56
On my weber manifold the "land" or shoulder for the 2 centre bolts was lower than the land on the std manifold. See the pictures below - the holes adjacent to the carb plinth are 30 - 35 mm approx above the lowest top surface of the manifold casting. On the Weber manifold that height is only approx 20mm so about a 10mm difference. The rest of the fixing points are the same.
Image below of the LH centre bolt on the weber manifold
I don't know if there are different designs of these manifolds as I did this work several years ago so I cannot remember whether I just shortened the bolts still leaving enough thread or extended the thread with a die nut or just replaced them.
Pic of my throttle linkage which I could improve on but has always worked OK.
The main problem is the lack of height for the air filter assuming you are using the adaptor plate with the crankcase ventialtion valve. I am looking into getting a purpose built plenum chamber made which will provide the required air flow and end up with two trumpets with K&N filters on like the std set up. I have one other Sonett owner interested and obviously the more we get the cheaper per unit they will become. I have the man with the skills to do it standing by it's just cash flow at present is tight and I need some new tyres!
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| thesaabologist | Posted - 04 Jul 2012 : 23:25:59
quote:
Originally posted by GeoffC
I had to shorten at least 2 of the inlet manifold bolts when I fitted one of those manifolds on my '73 Sonett. I'm on holiday at present so can't quite remember the details but will have a look when I get home.
However, agree with everybody else the linkage takes the most time!
so for the obvious question - why did you need to shorten inlet manifold bolts?
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1974 Sonett III
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| GeoffC | Posted - 29 Jun 2012 : 20:58:06
I had to shorten at least 2 of the inlet manifold bolts when I fitted one of those manifolds on my '73 Sonett. I'm on holiday at present so can't quite remember the details but will have a look when I get home.
However, agree with everybody else the linkage takes the most time! |
| thesaabologist | Posted - 28 Jun 2012 : 21:57:11
that engine looks sweet 
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1974 Sonett III
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| TTruckie | Posted - 28 Jun 2012 : 21:17:36
forgot to add you will need to remove rocker covers too.
I find buying one of these adjustable linkages off ebay paid dividends. This set-up is for a 32 DGV with a righthand pull arrangement.
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| beta | Posted - 28 Jun 2012 : 11:36:35
Agree with fiddling with the linkage.. took me ages to try and get it pulling in such a way to avoid stress on the choke bushings. |
| rsimps | Posted - 28 Jun 2012 : 07:58:04
Sometimes its the breather and linkage that can take some extra fiddling time. |
| TTruckie | Posted - 28 Jun 2012 : 07:34:51
I suggest we break this down into phases:
1. remove old carb - 30-45mins
2. remove old induction manifold - you we first have to drain the water system, hoses from the thermostat housing + temp sender, remove the dizzy, remove the breathers etc. then remove the main bolts. Remove the manifold with coolant spillage. Then tidy up from coolant and remove old gasket etc - could take a couple of hours depending of course what you find and feel like doing.
3 fit new manifold with gaskets - should not take too long if prep'ed but you will have to redo water hoses an fit the system which will need bleeding once you are running.
4. refit dizzy and statically time - dynamic will need doing later.
5 fit spacers + intermediate plate and then the new carb - 30 mins
6. create new linkage - depending whether you have a pusher or puller there may be a bit of head scratching and trial and error.
if you are prep'd and nothing goes wrong this could be done with in a day.
hope this helps - I've probably missed something |
