BUGA Community
Classifieds => Wanted => Topic started by: joshua on October 14, 2014, 09:39:04 AM
-
Hi guys im after a set of extractors for my beddy as they have rusted out. it has a holden 186. anyone out there have a set lying around I could by?
-
where are you Joshua?
we may have i will have to ask Ray....
-
Hey Wendy ;) Im based in Melbourne. This car is my learning experience about cars.. so im just entering the world of extractors now. Do certain ones make the car more fuel efficient? Also can I get ones to make it run quieter....
-
Hi Joshua
ok were in Lake Macquarie between Gosford and newcastle.
Yes extractors do make a difference..
we put a set of EFI extractors on our 202 and it made a differenc. :)
we now have a turbo on our 202 and that has made another significant difference :D :D
Im sure someone in Vic will be able to help you out with a set .
Do you know about the 40th Van nationals next year In Bathurst at easter time?
Its a great oppurtunity to mingle with vanners, theres 150 entered so far and we get to do a lap of the track as well!
and it doesnt matter what stage your van is at ..its all about being there.
Going to ba a great weekend.
www.bathurstvannationals.com. au (http://www.bathurstvannationals.com.au)
-
opps sorry the link is .com not .com.au ;)
http://www.bathurstvannationals.com/ (http://www.bathurstvannationals.com/)
-
Hey wendy thanks for that ;) I play lots of music so if im not at a festival this could be a great weekend..
-
Hey Wendy could you tell me more about the turbo part? is this something you would need to do at the same time as extractors? Im trying to make this thing as economical as possible as I do very long drives very often.. ;) thanks for your advice its always great!!!!
-
ahhh joshua Ray had to make or fabricate both inlet and exhaust manifolds to allow the turbo to fit down beside the engine as there is no room above the engine to allow a turbo to fit.
There was a lot of work that went into setting up the turbo to fit in the limited space of a bedford engine bay.
This is the link to pictures in my gallery on the turbo....
http://www.buga.com.au/index.php?option=com_gallery2&Itemid=8&g2_itemId=50187 (http://www.buga.com.au/index.php?option=com_gallery2&Itemid=8&g2_itemId=50187)
and this is the link to the pictures of the EFI mainfold Ray modified and fitted before we turboed the 202...this manifold did increase power yet was more economical than the standard cabi inlet manifold and extractors we had on orginally..we went from 23litre per 100km to 17.5 litres per 100kms ..keeping in mind we run straight LPG too.
http://www.buga.com.au/index.php?option=com_gallery2&Itemid=8&g2_itemId=49871 (http://www.buga.com.au/index.php?option=com_gallery2&Itemid=8&g2_itemId=49871)
hope that helps..Ray is only to happy to chat on phone if you like...just send us a personal message.
-
Joshua,
have a look at this item:
http://www.ebay.com.au/itm/331344404185?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649 (http://www.ebay.com.au/itm/331344404185?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649)
These are GMH performance headers fitted to GTR Torana's, 6 Cyl Monaros etc.
They are cast iron, so will not rust through like extractors.
There is a y piece that connects to the bottom so you have 2 into one system. It is not included with this item but an exhaust shop could get/make one to suit these.
These make a red motor breathe much better
Regards
Rhett
-
Hey ya Rhett so if I got this i would just need to get the Y system then that would go to the muffler? The two things im trying to achieve is better fuel and a quiet as can be....
-
Yeah quiet and fuel efficiency is the go.
There is Nothing worse than loud exhursts.
-
Hey ya Rhett so if I got this i would just need to get the Y system then that would go to the muffler? The two things im trying to achieve is better fuel and a quiet as can be....
Joshua,
Yes these work better than extractors (In my opinion) as extractors are designed to work best at 3500rpm + which is why the pipes are longer before they join together. GMH item better suited to a street application & the engine breathes much better than standard.
If you got the GMH ones you can put Y piece and a good quite muffler on to make it almost silent.
Regards
Rhett
-
yeah Rhett ..Rays knows about them but i dont think they fit a 202,
But good for Joshua, hard to find thou i think Ray mentioned , we do know someone with a set stillattached to the long pipes..but its up here on the central coast NSW
-
Joshua,
here is another set a bit lower priced at present
http://www.ebay.com.au/itm/171497688282?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649 (http://www.ebay.com.au/itm/171497688282?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649)
Regards
Rhett
-
There are a couple of things posted here that I don't agree with..
Firstly, extractors won't make an exhaust loud, they will add a deeper tone to an existing exhaust. The volume of the exhaust is dependent on the choice of mufflers and pipe diameter combined with length.
Cast iron manifolds may not rust like extractors, however they are prone to cracking which can be expensive or impossible to repair depending on the location and design.
Extractors are not designed to operate only above 3500rpm. That is a gross generalisation. Depending on pipe diameter, design (such as tri-y or 6-into-1), length of primary pipes, length of secondary pipes, exit pipe diameter, tailpipe size and restrictions, etc.
1 and 3/4 primaries for a semi stock motor will be more beneficial than those xu1 headers. Don't get me wrong, the xu1s had alot of potential, my uncle raced one to MANY victories in rallies around the country, however if the rules had allowed him to change to extractors he woukd have done so.
Making power is about allowing an engine to breathe, both in and out.
1 and 5/8 extractors woukd be fine for a stock motor, 1 and 7/8 is really only suited to a motor with power.
In short, get some headers that are appropriately sized to the potential of your motor, are visually in good condition or new, use the rest of the exhaust to muffle the volume to a level you are happy with.
-
Yeah i didnt think extractors made exhausts loud,
I always thought it was mufflers.
I always remember in my younger days mates putting hotdogs on
Their cars,
But the performance seemed to drop dramatically and they were loud
I hated the loud sound.
A good muffler gave the motor better back pressure that seemed to get better power.
I dont really understand why back pressure gave better power but noticed a big difference.
Cheers marty
-
Back pressure as such is an often misinterpreted medium.
What you want is a pipe properly sized so that exhaust velocity is high enough that a drop in rpm will continue to draw spent exhaust gasses through based on the previous exhaust velocity. Imagine the difference between a 2" exhaust and a 4" exhaust, the gasses will take much longer to fill the void in the larger pipe, therefore the velocity will be much lower. The offset is that the restriction may hamper the ability to expel large volumes of gasses at higher rpm. Hence bigger is not always better, it's all about synchronisation.
-
Holy Crap MaTTe - we have a mathematical genius in our midst - I'm not worthy!!!
-
Yeah that's what I recon, MaTTe. Hahaha ;)