Grant_7 Posted February 25, 2015 Share Posted February 25, 2015 Hi All,I love my little (Sigma 140) Supersport however I've always yearned for a bit more induction noise. I'm thinking of getting some of the throttle bodies that were fitted to the old Sigma 150s.Any ideas as to whether this will work with the 140 ECU 'map? Any other points to consider? I'm not really worried about more power, just want that noise Link to comment Share on other sites More sharing options...
ChrisC Posted February 25, 2015 Share Posted February 25, 2015 Don't worry about the noise, there is no signifcant increase, but there is a nice sucking sound added. I got on Bedford last year and had no noise problems. I think the cams are basically the same, not sure if the 140 uses the blue injector, or the map sensor in the same way, but I would play safe and get Road and Race to sort that bit. Power wise I think the 150 is a bit less than the 140. This is exactly why I went 150 last year (not the easy 140 route) with my 2011 car. No regrets. Link to comment Share on other sites More sharing options...
SM25T Posted February 25, 2015 Share Posted February 25, 2015 150bhp is less than 140 ?? Do you mean Track & Road, not Road & Race ? Link to comment Share on other sites More sharing options...
ChrisC Posted February 25, 2015 Share Posted February 25, 2015 The 150 is reported to have 138 ish, where the 140 is supposed to produce more than 140, so in this case 140 is more than 150 and yes you are correct its "Track & Road", not sure where Road and Race came from Link to comment Share on other sites More sharing options...
David Brown Posted February 25, 2015 Share Posted February 25, 2015 Yhink it was lost in transmission. Link to comment Share on other sites More sharing options...
OliW Posted February 25, 2015 Share Posted February 25, 2015 The reports of low powered 150s might be true but not in my experience. Mine was 151.7 on the rollers at Northampton.Still, the old adage is that power sells cars, torque wins races... Link to comment Share on other sites More sharing options...
Martin J Posted February 25, 2015 Share Posted February 25, 2015 I know someone who did the exact opposite a while ago as he couldn't get on with the poor throttle response of his 150.The 150 does sound good though. Steve M's reminds me of an escort twin cam. Link to comment Share on other sites More sharing options...
SM25T Posted February 25, 2015 Share Posted February 25, 2015 Yes ... aware of a conversion from 150 spec to 140 spec. Drove much better. Link to comment Share on other sites More sharing options...
Grant_7 Posted February 26, 2015 Author Share Posted February 26, 2015 So no one out there who's running throttle bodies on their Sigma 140? Link to comment Share on other sites More sharing options...
RedCat7 Posted February 26, 2015 Share Posted February 26, 2015 Sigma 150 and 140 had different cooling setups. 150 came with the crappy plastic tanked radiator (which I assume by now have all failed and been replaced with an all-ally one) and a modine oil cooler. 140 has the ally radiator but no oil coiler (AFAIK). I wonder if adding the oil cooler would ne neccessary if you added the 150 TBs. Maybe not, since the power increase is small but something to keep in mind.Another difference is the 140 has a lightened flywheel but the 150 does not. That begs the question has anyone fitted the 140 flywheel to a 150 and how different does it feel?My 150 runs nicely so long as the TBs are balanced and the induction noise is lovely. Link to comment Share on other sites More sharing options...
Grant_7 Posted February 26, 2015 Author Share Posted February 26, 2015 Thanks for the reply RedCat7 I already have the modine oil cooler however I've decided not to get the TBs. All advice seems to suggest they're fiddly to set up and then need to be maintained as such. With a little one on the way, I need to take every opportunity to get out in the car this summer rather than be stuck in the garage fiddling with setups. Link to comment Share on other sites More sharing options...
ChrisC Posted February 26, 2015 Share Posted February 26, 2015 My 150 has had the 140 flywheel fitted this year. Let you know when the weather gets better.Are there any Sigma engine cars running the plastic rad, I was under the impression they all leaked years ago. Link to comment Share on other sites More sharing options...
OliW Posted February 26, 2015 Share Posted February 26, 2015 Grant,Take all advice with a pinch of salt. My TBs have been set up once in three years and it has run faultlessly since then. I am having them checked at Premier Power shortly, but that's because my engine is there anyway. You can do it yourself, easily and in little time. I've certainly not been stuck in the garage so don't be put off. Link to comment Share on other sites More sharing options...
ChrisC Posted February 26, 2015 Share Posted February 26, 2015 I think my TB check takes 10 mins, max so as OliW says its not a big deal. But it helps owning the tools. Link to comment Share on other sites More sharing options...
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