1.4 8v Turbo

[The subtle modder]

http://www.arosa-club.nl/phpBB2/viewtopic.php?t=2543

was looking on here and found this thread it uses one of my engines which is why it attracted my attention and is going in a mk1 arosa

1.4 8v Mpi unit which he is then getting rid of the injection and fitting Honda CBR 900 Motor bike carbs, a shrick cam and best of all a cutom turbo conversion, now i used Google to translate parts of it but it wasnt good so im not going to put it on here so do as i did look through all the pages and at the pictures and you soon get the idea

wayne

Edited October 28, 2006 by The subtle modder

[LoopyLing]

Looks like a huge turbo!

[Ramirez]

Why bike carb and turbo?

The carbs will be bad enough to set up without the turbo (BC's tend to be lumpy anyway) Who ever does the mapping is going to hate this guy.

[The subtle modder]

thats the odd thing hes getting rid of the electronic injection by using bike carbs instead of the more modern bike throttle bodies running of injection so hes saved work there and saved quite a bit by not needing aftermarket management

but surely he will need a fifth injector etc for the turbo? so will need an ecu of some kind to control that? not too sure myself but it looks a good build and its based on a realistic easy to find engine and i thought people like tiqz may like the thread as much as me style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />

wayne

[Slavi]

Funny you are talking about my Arosa here style="vertical-align:middle" emoid=":D" border="0" alt="biggrin.gif" />

You got it almost right but I'll explain a very short version of what has been said in that topic;

My plan was to build the CBR carbs on my engine with the Schrick 280 cam and some additional stuff. Back then a turbo was not my intention. The bikecarbs are designed for a 900cc engine that can cope with about 12000 rpm. They will do really nice on a 1400 or 1600cc engine. Much better then Webers for example. Main benefit is that you lose the management so you won't need an expensive aftermarket one.

Here in the Netherlands there are some polo's with a same sort of setup. For example: A standard polo 1.6 AEE engine that brings about 75hp.

With CBR carbs, 272 cam and some adjustions to the cil. head for higher compression it brought 109hp. Quite a nice gain style="vertical-align:middle" emoid=":wub:" border="0" alt="wub.gif" /> .

Maybe you guys are not impressed. I saw some pretty nice conversions here with TB's too style="vertical-align:middle" emoid=":wub:" border="0" alt="wub.gif" />

Unfortunately for the carbs I got the opportunity to buy me an exhaust manifold with M27 turbo. I couldn't resist so I switched to turbo setup. For a second I thought about using the carbs and the turbo both but realized that this wil not be possible. Well IT IS actually but in Holland we have a some sort of inspection (called APK) that you need to go to every year. To pass the test with carbs I wanted to let them run on few gas so it would past the tests. With a turbo this is not possible because you would burn the exhaust valves.

Now the idea is to lower the compression by placing a 1.6 AEE cil. head on my 1.4 AEX engine. Instead of the standard 10,4/ 1 I want 8,0 or 8,5 / 1 for a nice and I boost.

The cam will probably be a standard one from a old Polo 3F engine. This one is somewhat sharper and works very well on G40 with turbo conversion. If it does not work with me I will purchase a Asymetric one.

I am not sure about the inlet manifold yet. Maybe a 3F inlet as well but then the cil. head needs some more work. Another option is TB's but that's pretty expensive.

Management will probably be a stand alone one of KMS but that too needs some more thinking style="vertical-align:middle" emoid=";)" border="0" alt="wink.gif" />.

Well that's about it. Feel free to ask questions.

Björn

[Ramirez]

Hi and welcome!

Maybe you guys are not impressed. I saw some pretty nice conversions here with TB's too style="vertical-align:middle" emoid=":wub:" border="0" alt="wub.gif" />

Björn

It's not that I was unimpressed it's just the combo, but seeing as your doing away with the carbs it'll make life much easier.

I've been looking into bike carbs for sometime now, did you ever get them up and running?

Also, did you re-jet them if so how did you work out what was optimum or was it guess work?

[Slavi]

Hi and welcome!

TNX!

It's not that I was unimpressed it's just the combo, but seeing as your doing away with the carbs it'll make life much easier.

That's a fact!

If I could have passed the yearly inspection with turbo and carbs I would have kept the carbs. Unfortunately that's not the case.

I've been looking into bike carbs for sometime now, did you ever get them up and running?

Also, did you re-jet them if so how did you work out what was optimum or was it guess work?

The Carbs never made it on my engine so I can't tell you how to make them work properly. All I know is that some people here proved that it's possible to gain hp by using them.

One guy here in Holland is a real expert in making these conversions. All the information about carbs I have comes from him. www.spottuning.nl is his website. You might wanna contact him if you need some info!

Edited October 24, 2006 by Slavi

[Ramirez]

Thanks, will have a look...

[The subtle modder]

Funny you are talking about my Arosa here style="vertical-align:middle" emoid=":D" border="0" alt="biggrin.gif" />

You got it almost right but I'll explain a very short version of what has been said in that topic;

Björn

First of all welcome to the forum style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />

sorry for posting it without asking style="vertical-align:middle" emoid=":blush:" border="0" alt="blush.gif" /> but it gave me inspiration and proved there is some hope left in my engine style="vertical-align:middle" emoid=":lol:" border="0" alt="laugh.gif" /> and got to say really impressed with what i have seen in the pics so far, its a shame it couldnt have been both the carbs and turbo but a 1.4 turbo is gonna be quite impressive enough id imagine style="vertical-align:middle" emoid=":D" border="0" alt="biggrin.gif" />

and you are very good on your english if you dont mind me asking what nationality are you? you type better english than some of our english members style="vertical-align:middle" emoid=":lol:" border="0" alt="laugh.gif" />

wayne

[Slavi]

First of all welcome to the forum style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />

Tnx!

sorry for posting it without asking style="vertical-align:middle" emoid=":blush:" border="0" alt="blush.gif" /> but it gave me inspiration and proved there is some hope left in my engine style="vertical-align:middle" emoid=":lol:" border="0" alt="laugh.gif" /> and got to say really impressed with what i have seen in the pics so far, its a shame it couldnt have been both the carbs and turbo but a 1.4 turbo is gonna be quite impressive enough id imagine style="vertical-align:middle" emoid=":D" border="0" alt="biggrin.gif" />

No problem, you can't ask everyone you talk about here style="vertical-align:middle" emoid=";)" border="0" alt="wink.gif" /> . I hope that the turbo conversion will go somewhat smooth. But you know how it goes with such a project, you always need a bit extra and when it's finished it gets boring and you want to start a new project style="vertical-align:middle" emoid=":rolleyes:" border="0" alt="rolleyes.gif" />

But for the upcoming year I'll be busy I guess.

and you are very good on your english if you dont mind me asking what nationality are you? you type better english than some of our english members style="vertical-align:middle" emoid=":lol:" border="0" alt="laugh.gif" />

wayne

And tnx again style="vertical-align:middle" emoid=":blush:" border="0" alt="blush.gif" /> I have the Dutch nationality but languages were never such a big problem for me fortunately. Sometimes I doubt about how to say things like; Is it "I have the Dutch nationality" or "I am the Dutch nationality"? I would say "have" because you would say have in Dutch but you say; What nationality "are" you?

Anyway tnx for the compliment and I'll keep you guys updated in the introduction topic I opended yesterday!

Björn

Edited October 25, 2006 by Slavi

[Teflon]

that's a real early polo engine tho isn't it?? the the finger rockers!! vintage

[Ramirez]

Looks like a Coupé S engine to me (Rockers the same as my old one).

[Slavi]

that's a real early polo engine tho isn't it?? the the finger rockers!! vintage

Do you mean this engine with the Schrick cam??;

border="0" class="linked-image" /> border="0" alt="" />

That's a cilinderhead of a very early polo. From 1983 with motorcode HH to be exact.

These heads also fit on our "new" engines with hydrolic valves. (With the "finger rockers" you probably mean not hydrolic right?. Or schlepphebel in German?)

I wanted to use such a head cause they can cope with high revs better than the hydrolic heads.

Make sure you always use the ones with compression space in the head (HH or HB). If you use the ones without it, for example all old hydrolic cil. heads, your compression will be sky high.

[Teflon]

That's a cilinderhead of a very early polo. From 1983 with motorcode HH to be exact.

These heads also fit on our "new" engines with hydrolic valves. (With the "finger rockers" you probably mean not hydrolic right?. Or schlepphebel in German?)

I wanted to use such a head cause they can cope with high revs better than the hydrolic heads.

Make sure you always use the ones with compression space in the head (HH or HB). If you use the ones without it, for example all old hydrolic cil. heads, your compression will be sky high.

yeah i meant 'not hydraulic' i think there was a language understanding issue there somewhere.... it's been years since i've seen one of those early pre'83 heads.... they were quite good too, but not as good as the later overhead lifter type, also the other problem (well maybe not where you are) is that it is very difficult to get replacement parts for the old heads here now..

[Slavi]

In The Netherlands we have the same problem as you guys in the UK. Sometimes you can find some replacement parts here in NL but usually you need to go to Germany. If I need parts I always try the German ebay (www.ebay.de). Only the shipment costs are a bit higher.

[MattyA]

Welcome!

Looks a really interesting project!

Nice set of BBS RM's there style="vertical-align:middle" emoid=":wub:" border="0" alt="wub.gif" />

I have just bought a set that need a refurb, did you do yours yourself? If so can you give me any advice?

Edited October 28, 2006 by matt a

[Slavi]

Tnx!

I did mine myself. I'll PM you about it.

Björn

[The subtle modder]

I have the Dutch nationality but languages were never such a big problem for me fortunately. Sometimes I doubt about how to say things like; Is it "I have the Dutch nationality" or "I am the Dutch nationality"? I would say "have" because you would say have in Dutch but you say; What nationality "are" you?

Anyway tnx for the compliment and I'll keep you guys updated in the introduction topic I opended yesterday!

Björn

To be honest i dont know the proper way to phrase the question myself style="vertical-align:middle" emoid=":lol:" border="0" alt="laugh.gif" /> but either way im impressed style="vertical-align:middle" emoid=":shades:" border="0" alt="shades.gif" />

i have now changed the topic title so that at least is correct and look forward to the future updates on both of your threads style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />

wayne