mad_dome 1 Posted February 1, 2008 Just got a new throttle body ported and polished gasflowed etc. and was wondering if i needed to run the water connections to it once fitted? Or would it be better to block the holes and just have it running off a cold air feed? The reason for my querie is because once the car has warmed up the water will have warmed up and i think that will be affecting my cold air feed as these are connected to the throtel body am i right and what should i do??? Share this post Link to post Share on other sites
DrSarty 94 1 Cars Posted February 1, 2008 Obviously it was once there for a reason, BUT, I've heard of many people not bothering to reconnect the TB water lines when they do their 205 conversion with no adverse affects. The GTi6 TB has an electric element heater BTW, and I'd like to hear someone really knowledgable explain if either system is actually of any use? Share this post Link to post Share on other sites
Sandy 191 Posted February 1, 2008 Prevents icing, which really does happen! Share this post Link to post Share on other sites
DrSarty 94 1 Cars Posted February 1, 2008 Prevents icing, which really does happen! Do you mean that Sandy, or are you being flippant? Serious question guv. Share this post Link to post Share on other sites
Tom Fenton 1,554 Posted February 1, 2008 I'd say for definate he means it. Can't remember the exact science behind it, but it is something to do with the low pressure area created behind the throttle disc at part throttle causes a low temperature, if the air coming in is moist e.g. in the winter, this moisture freezes around the throttle disc, eventually forming a block of ice sufficient to starve the engine of air and it cuts out. Leave the car to stand for a few mins and the heat from the engine etc radiates into the ice and melts it, and off you go again. I've never experienced it on a 205 but on an old Mini I used to have it happened to me once or twice. Share this post Link to post Share on other sites
Rippthrough 98 Posted February 1, 2008 (edited) Yep, it happens - in my 306, even when running with Iso-Propyl Alcohol (a fuel deicer), throttle body heater and a silicon coated throttle body (ice finds it harder to form on silicon), I can still get enough ice built up in the throttle body on overrun to stall the engine when the clutch is dipped if the engine is cold. Before I was running that lot you could leave it idling, jump out and watch 1/4" of ice suddenly build up on the throttle plate until the engine stopped. It can be really nasty if you're sat at a junction because the first 1/4 of the throttle travel won't let in any extra air due to the ice build up, so you end up running hugely rich when you set off and having about 4bhp. Edited February 1, 2008 by Rippthrough Share this post Link to post Share on other sites
