red vtec Posted July 24, 2010 Report Share Posted July 24, 2010 If I have a dodgy gasket on the turbo plenum will it run like a bag of old spanners, i.e zero power? Is that correct? When on the road it has no power, i guess i'm sucking in air, have ordered anew one from SJ Sportscars. Chris Quote Amateurs built the Ark Professionals built the Titanic "I haven't ridden in cars pulled by cows before" "Bullocks, Mr.Belcher" "No, I haven't, honestly" Link to comment Share on other sites More sharing options...
troutrou Posted July 24, 2010 Report Share Posted July 24, 2010 (edited) If I have a dodgy gasket on the turbo plenum will it run like a bag of old spanners, i.e zero power? Is that correct? Well I don't think it would leak so much as to cause "zero power" as you say, and in any case you can easily know if your boost is escaping or not : just read the boost guage on your dashboard ;-) If you get 0.6bars on full blast, then all is well in the boost department, and your lack of power is due to somethig else. Edited July 24, 2010 by troutrou Quote Link to comment Share on other sites More sharing options...
red vtec Posted July 24, 2010 Author Report Share Posted July 24, 2010 Not getting much boost, I think its due to gasket, I'll look in morning, wont do any harm to fit a new one Quote Amateurs built the Ark Professionals built the Titanic "I haven't ridden in cars pulled by cows before" "Bullocks, Mr.Belcher" "No, I haven't, honestly" Link to comment Share on other sites More sharing options...
lotus4s Posted July 24, 2010 Report Share Posted July 24, 2010 (edited) Have you checked the inside of the big hose that goes from air intake box to turbo? When they get old they can sometimes delaminate on the inside and collapse under boost vacuum. Just a thought worth checking... Edited July 24, 2010 by lotus4s Quote 1995 S4s Link to comment Share on other sites More sharing options...
Bibs Posted July 26, 2010 Report Share Posted July 26, 2010 i guess i'm sucking in air Sucking in air is a good thing, it's blowing it out that you don't want! Quote 88 Esprit NA, 89 Esprit Turbo SE, Evora, Evora S, Evora IPS, Evora S IPS, Evora S IPS SR, Evora 400, Elise S1, Elise S1 111s, Evora GT410 Sport Evora NA For forum issues, please contact the Moderators. I will aim to respond to emails/PM's Mon-Fri 9-6 GMT. Link to comment Share on other sites More sharing options...
red vtec Posted July 26, 2010 Author Report Share Posted July 26, 2010 Ah! thats what I think its doing I have ordered a new one so hopefully will get it soon. Quote Amateurs built the Ark Professionals built the Titanic "I haven't ridden in cars pulled by cows before" "Bullocks, Mr.Belcher" "No, I haven't, honestly" Link to comment Share on other sites More sharing options...
Mike6 Posted April 20, 2014 Report Share Posted April 20, 2014 I would imagine Lotus used a gasket for a reason, its pretty cheap so would stick with it. Quote Link to comment Share on other sites More sharing options...
red vtec Posted April 20, 2014 Author Report Share Posted April 20, 2014 Hi Buddsy, I think you could actually make one from gasket paper, you can get that from a motor factor cheap. The sj one is not much more than that. Chris Quote Amateurs built the Ark Professionals built the Titanic "I haven't ridden in cars pulled by cows before" "Bullocks, Mr.Belcher" "No, I haven't, honestly" Link to comment Share on other sites More sharing options...
Qavion Posted April 20, 2014 Report Share Posted April 20, 2014 Not getting much boost, I think its due to gasket, I'll look in morning, wont do any harm to fit a new one Could be any number of factors (almost), depending on who last worked on the car. Post-maintenance, I didn't sufficiently tighten the jubilee clips on the orange pipe from the turbo to the intercooler (letting pressure out). 1 Quote Link to comment Share on other sites More sharing options...
rogerch Posted April 21, 2014 Report Share Posted April 21, 2014 Wastegate not closing. Quote Life is like a sewer, what you get out of it, depends on what you put into it. (Tom Leahrer) Link to comment Share on other sites More sharing options...
red vtec Posted April 21, 2014 Author Report Share Posted April 21, 2014 Regards the boost I had not plugged the pipe back in...... Buddsy to make the gasket hold the paper over the face of the plenum and gently tap it round the edge with a flat hammer this will give you an exact outline of the gasket. They did that on wheeler dealer 1 Quote Amateurs built the Ark Professionals built the Titanic "I haven't ridden in cars pulled by cows before" "Bullocks, Mr.Belcher" "No, I haven't, honestly" Link to comment Share on other sites More sharing options...
red vtec Posted April 21, 2014 Author Report Share Posted April 21, 2014 That's correct I have a carb tune I paid about £50 I have the instructions for setting the carbs somewhere Quote Amateurs built the Ark Professionals built the Titanic "I haven't ridden in cars pulled by cows before" "Bullocks, Mr.Belcher" "No, I haven't, honestly" Link to comment Share on other sites More sharing options...
jonwat Posted April 21, 2014 Report Share Posted April 21, 2014 Note that the link is to a two cylinder, you need a four :-) http://www.carbtune.com/ Quote Cheers, John W http://jonwatkins.co.uk Link to comment Share on other sites More sharing options...
Neil Potter Posted April 21, 2014 Report Share Posted April 21, 2014 I also make my own plenum, air pipe and carb gaskets from 0.8mm gasket paper by using the old one as a template, and sealing with Hylomar. Use an 8mm punch to cut out the holes for the bolts. Oddly, I found a Swiss 5 franc coin is the perfect curve when using my Swiss Army knife to carve the curvy bits on the corners of the big plenum gasket. Not very quick to produce but saves a fortune. FWIW I think the Carbtune is the most essential specialist tool for our cars, well worth it. Quote Link to comment Share on other sites More sharing options...
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