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janmarine3
South Africa
286 Posts |
 Posted - 07 Mar 2011 : 19:15:02
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Hi UMU.
I can tell you I fitted twin 40 webers with the angled inlet manifold to the standard 1725cc engine I fitted in my ser 3 Rapier, they came straight off a H120 off ebay .Even though the carbs were lying at an angle they worked ok after I set the float levels lower because fuel was leaking out the ram tubes.
I then got a modified welded manfold off ebay and fitted it, the carbs are roaring sweet after tinkering with the jets a bit. When driving normally I get 12 km's to a litre, and there is plenty torque and the clock runs out in no time at 100 mph. 
There is a photo of the webers under the 'your cars' forum .
Cheers
Jan.
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JPSH120
United Kingdom
1178 Posts |
Posted - 07 Mar 2011 : 19:26:37
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Hi Martin,
A set of Weber DCOE 40 carbs as fitted to H120's should do nicely. Even though your engine is bored to 1.9 I think the 40's will be fine as truth be told they are a bit OTT for the H120 engine - be warned though they like a drink!!!
Here's a picture of the set up you'll need;
The inlet manifold isn't too hard to find, here is one on eBay - http://cgi.ebay.co.uk/holbay-inlet-manifold-/230594617893?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item35b082a225
The more difficult things to find will be the air filter housing and the carb cover (orange fibreglass bit).
You might be better fitting the carbs with ram filters instead.
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Fastback Thomas
Belgium
423 Posts |
Posted - 07 Mar 2011 : 20:02:21
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quote:
Originally posted by JPSH120
Here's a picture of the set up you'll need;
The inlet manifold isn't too hard to find, here is one on eBay - http://cgi.ebay.co.uk/holbay-inlet-manifold-/230594617893?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item35b082a225
The more difficult things to find will be the air filter housing and the carb cover (orange fibreglass bit).
You might be better fitting the carbs with ram filters instead.
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Hi Jason,
Is that your car,
I'm wondering if you can really feel the difference with or without that stiffening bar between the front suspension legs...
Thomas
I like a car that looks normal but really knocks your socks off!! |
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JPSH120
United Kingdom
1178 Posts |
Posted - 07 Mar 2011 : 20:37:36
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Hi Thomas,
No it is not my car. I would imagine the strut brace does improve the stability in corners, but something would have to be done about the snake happy tail end!!
By the way, I have not forgotten about the manifold, my Dad has moved all my parts and I am yet to find the manifold, it could be in 1 of 3 places!!
FYI there is one on ebay at the moment;
http://cgi.ebay.co.uk/Holbay-exhaust-manafold-/230594145203?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item35b07b6bb3
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Fastback Thomas
Belgium
423 Posts |
Posted - 07 Mar 2011 : 21:01:00
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Thanks Jason,
I might be tempted to construct something similar by the time I'll be driving my rapier. The snake happy rear end, is what makes a rear wheel drive sports car what it is...
I'm not really in a hurry to get myself an exhaust manifold and I like buying things from a person face-to-face. So you still got some time. 
Cheers
Thomas
I like a car that looks normal but really knocks your socks off!! |
Edited by - Fastback Thomas on 07 Mar 2011 21:01:27 |
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UMU
United Kingdom
343 Posts |
Posted - 07 Mar 2011 : 21:41:17
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Wow thanks guys thats really helpful with great advice and bril pic to follow.
Its such a big decision (over £500) to be made, do you think ill notice the improvment in power and sound etc and do you think the fuel consumption really will be much worse than it is now.
My other worry is although im trying to get my car as quick as i can, whilst keeping its with a long life span it must run smooth through the revs and ive heard weber can hinder that.
But big plus's for me are the looks and possible power increase as well as allowing the engine to be tuned better.
Also instead of my replacing my exhaust manifold downpipes, which are from a H120 as yet again they are shedding their paint, does anyone have any experience with the fibreglass woven bandage that can be used to wrap them instead. Ive seen a warning about fire as any gaps will expell intense heat - but im guessing thats only a problem in a tightly packed bay - which ours arnt.
Thanks again guys
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JPSH120
United Kingdom
1178 Posts |
Posted - 07 Mar 2011 : 22:04:12
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The Webers do make an awesome noise and they are not problematic if they are set up right, this does need doing fairly regularly to keep them sweet. In some way yours may run better then the std H120 with the extra displacement.
As for the manifold wrap it is something I am considering although ceramic coating isn't too expensive and looks good too.
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1922
United Kingdom
549 Posts |
Posted - 08 Mar 2011 : 19:02:30
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Another point about the air filter: The standard H120/GLS setup is jetted to run with the standard air filter fitted and it will run poorly without it (I've tried it!).
You can run K&N (or similar) filters but this will require rejetting.
Fuel consumption is high in heavy traffic (less than 15mpg I think) - but on the open road it can be good. I used to get nearly 31mpg on a 230 mile run (Norwich to Welwyn Garden City and back), better than I ever got from the strombergs.
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Edited by - 1922 on 08 Mar 2011 19:12:06 |
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Strombergs resto
