UK-POLOS.NET - THE VW Polo Forum

Nice project !

now i am very interesed and wish to do it on my own !

i have 1,6 AEA engine and if i start this !

which carbs are best to put ?

Jarno could you explain to me what SC50 and SC57 stand for ?
from what bike is this ?

i was today with my friend how has carbs from suzuki gsxr 750 !
and carbs are 32 mm is this enough to put it on my engine ?

And big i didnt understand part with electronics from golf ?? why that ?

and how much BHP you think you will have ? and now you have 75 as me or ?

EDIT forget to ask is the Manifold made from aluminum complete ?

SC50 and SC57 are the codes for a Honda CBR 900 RR and CBR 1000RR respectively.

32mm is too small, the diameter of the inletvalves of a AEA are 35,6mm, so carbs with a diameter of 32mm will only restrict the inflow of air in your engine/cilinders. Most commen used are 38mm or larger carbs, don't go too large, because that will cause the speed of the flow to drop too much, causing the inletair to heat up too much before it enters the engine/cilinders, and hot air is bad for performance

A fellow I know over here has bike carbs on his 1.6 Polo engine, ported and skimmed the head to the max, modded almost everything, but still drives N/A, engine does around 150BHP on the frontwheels. But of course that kind of power f*cks up the engine's reliability and driveability.

A few updates,
Finaly got the head back! just a few pics




Had ago at making an inlet manifold gasket today because they normaly use o-rings, pretty pleased with it,



Test run with the carbs on the maniold, can just about get them on!



All i need now is £230 for the cam and pulley then it can go in!

Headwork looks good so to see on the pics, but they didn't skim of much of the bottom surface did they? Rest looks good, got the rest of the head refurbished too?

Good luck, I can tell you you will definately love the effect it all has on your performance, and the sound those inletports of the head will make combined with the sound of the carbs, it's just pure porno!

Looking to be pretty awesome there man.

What modifications have you had to make to the throttle bodies themselves?

Have you checked youve got enough room to fit those bad bois in the engine bay lol

ooooooooooooooooooooooooopppps
u have done a good job with head and everything on the right track
but your way off with R6 carbs
an R6 is 600cc not 1600cc
you will have huge proglems getting the jetting right with bike carbs for a 1.6 as the bores are very small and al of the built in pasages on the carbs are going to be way too small to get the mixture u need to run never mind do a better job than the injection system
when u go over the 1.3 mark with a 4 cylender car you would usually start looking at webbers or another kind of side draft twin choke
i did help my frend run his mk1 golf 1.0 on CB950 carbs and with the retetting from a bore out kit we got it to run then had to balence it all up took hours even with the right kit
i think the only reason is that we pulled it off is cuz he is a carb specialist fwith classic cars and services carbs on old prancing horses astons and jags with 4 or 6 carbs on them
personally i would go for some very big big carbs not your small ones maybe rejet a set off a 1.4 bike
or if i was doing it my self go for side drafts weeber 35s
also i think your electrics will be fun we are currently scratching our heads with electrics on a mk1 golf with a kr16v 1.8 with twin 45s real pain trying to put an advance and teard system on an engine that wants to be injection

but i will let u when how it goes and just ask if i can be any help to u

@ BratmanGTI:

Looky here m8:



A 1.6 16v GTi from a mk4 (the 120BHP lumps, only 500 ever build & sold in Germany) running on Kehin carbs, 38mm's in diameter, coming from a Honda CBR900.

Eventhough the original motorcycle only had 900cc, and the car has 1600cc, believe me, it runs like a Brasilian prositute chased by a pack of sailors who just came on shore after a 6-month trip on the Caribean chasing drug-smugglars

The engine get's plenty of air and fuel from it, more then enough to get this baby over 150 BHP at the frontwheels

JarnoVWPolo6N wrote:
Looky here m8:

[, coming from a Honda CBR900.

yer CBR 900 carbs twice the size off R6 carbs
i do know what R6 carbs are like having an R6 myself
CBR900 carbs on the other hand are a completely different question
all i can coment on really is the R6 carbs
as im not a carb specialist like like my friend joss from horison motorsport
he does seem to know a little bit about carb modin a 6 twin chocked ferrari LN seems like if know how to go about that sort of thing i think a few carbs off a bike wouldnt even b scratchin at the surface
i offered his profetional opinion
if u dont wanna listen to someone whos knows what he is on about
the quiet simply dont

only time and speeding will settle this arguement i feel.

Lets wait till we all get down the pod with finished cars lads then we can settle all discussions lol.

BratManGTi wrote: i do know what R6 carbs are like having an R6 myself
CBR900 carbs on the other hand are a completely different question
all i can coment on really is the R6 carbs

What the diameter of R6 carbs then? That sure is a good point you make, all I was trying to say is that it doesn't matter if the donor-motors engine is smaller (in cc's) then the engine you'll be bolting it on, as long as of course the diameter of the throttle's is big enough (like I said, those Keihin's are 38mm in diameter, which is about enough to "feed" the two 29,5mm in diameter inletvalves)

Sorry havent been on here in quite a while, R6 carbs are 36mm, and inlet ports on the head are 32mm, i have been told by bogg Brothers (specialist in bike carb conversions) to drill the jets out to 1.5mm and what to adjust to get a basic setting, and this will be enough to start with, i may need to increase the jets when i get them set up, along with Jarno's freinds 1.6 16v on bike carbs, there is someone on club polo running a AEE on R6 carbs, and he got his running without any guidance, may i also point out im a VW main dealer technician, Hopefuly the engine will go in next month, wel see what happens then!

What the diameter of R6 carbs then? That sure is a good point you make, all I was trying to say is that it doesn't matter if the donor-motors engine is smaller (in cc's) then the engine you'll be bolting it on, as long as of course the diameter of the throttle's is big enough (like I said, those Keihin's are 38mm in diameter, which is about enough to "feed" the two 29,5mm in diameter inletvalves)

not sure what size in diamentre they are and not taking the bike apart to find out the cars in bits as it is
its not so much the diamiter when it comes to using big oversized jets
the cars are matched t the cc of the bike it comes to a certain point where the fuel changes in the float chambers connot carry the needed fuel for the jets
obviously some carbs will work some not
but its alot of work to find out they dont
even more unlikely if your going to be usin a none standard cam as then theres need for even more fuel
we r just trying to raise a few ifs and buts
the idea came from my freinds dad who has an SR500 single 2 valve with a 34mm carb
tried using an aprilia RS125 derestricted carb with the same grade SR jets in
wouldnt even give the SR enough fuel to rev with the choke on[/url]

Nothing new with project ? where is the problem ?

Jarno
1.6 AEA has 35,6 - best to put CBR900RR which has 38mm
how much is 1000RR
and do you know how much is from R1 ?
and
Do you know
how much inlet is on 1.4 16v ?

and can you provide me drawing of AEA inlet manifold side wich comes to engine !
i know you have one on side ! so i don't need to take out mine to measure !
so i can build new inlet manifold !

Thanks

u cannot just compare the size of the bores
for a start
multipoint injection has injectors that can suply s**t loads of fuel
a carb has a rout from the fuel inlet around the iner of the float chanmber and in, this is the bit u have to be sure about
im not comenting on any other carbs especially kehin carbs that honda use
i am on about the R6 carbs that suzuki use
the older tge carb the better as they are less spesific
take the 400/4 honds
kehin carbs
the same carbs used on the klr600 which is a single
but for in a row with smaller jets this is where its going to work

@ Petar001: try to get yourself a decent camshaft first m8 before you go any further, and try to get some more knowledge about moddin' engines first, that will save you a lot of time, money and sorrow in the long-run