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Model specific boards => Golf mk3 => Topic started by: ju571n on 09 February 2013, 18:01

Title: Up my rev limit??
Post by: ju571n on 09 February 2013, 18:01

Evening all..

Just wondered if any of you knowledgeable lot know how I can raise my rev limit..?

Its an 8v with a crossflow head that's been worked, and everything else associated.

Thanks in advance.

Title: Re: Up my rev limit??
Post by: tweed on 09 February 2013, 18:42

Why do you want it raised?

 Get it on a rolling road and only if peak power is made at rev limit should you raise it.

Man thing to shift the power curve is the cam, changed that?

Title: Re: Up my rev limit??
Post by: ju571n on 09 February 2013, 19:37

Yup, got the cam, adjustable pulley, flowed head, all ti gear. Lightened fly, bike carbs... think it would be making peak power at top end of my rev limit... Open to being told otherwise.

Title: Re: Up my rev limit??
Post by: Khare on 09 February 2013, 20:13

Doubt it. My old cammed 8v made power only a few hundred rpm after standard. Get it on a dyno and see  :smiley:

Title: Re: Up my rev limit??
Post by: ju571n on 09 February 2013, 20:34

Ok chaps.. No harm in asking.  :cool:

Title: Re: Up my rev limit??
Post by: tweed on 09 February 2013, 20:47

Fair play might be worth a extra 1000 rpm but you'll need to change valve springs I would of thought.

Title: Re: Up my rev limit??
Post by: ju571n on 09 February 2013, 20:52

Its all ready for it Tweed, heads good for well above standard.  :smiley:

Title: Re: Up my rev limit??
Post by: tweed on 09 February 2013, 21:38

Get on it then buh. Sounds like you need a chip and map to get the best from it but fear the gain won't be worth the money.

Title: Re: Up my rev limit??
Post by: ju571n on 09 February 2013, 21:53

I'm debating putting it on megajolt and plumbing the TPS on the carbs so.... Would that deal with the rev limit for me? Not to knowledgeable about the standalone management stuff if anyone can help? Logical money has gone out of the window.. Would have been as cheap to put a 20v in it by now. I want it set up as best I can?  :smiley:

Title: Re: Up my rev limit??
Post by: VW BUSH on 09 February 2013, 23:15

Need to stick it on a dyno to see where you are and if you need to raise it, have you set up the vernier properly?

Title: Re: Up my rev limit??
Post by: ju571n on 10 February 2013, 08:37

No not yet. Still haven't finished the build. Just speculating. Waiti g to see if it will run on my management. If not ill megajolt it then its off to Bogg Bros to have the carbs set up. And megajolt if applicable. Then need to set the cam. Am I right?

Title: Re: Up my rev limit??
Post by: tweed on 10 February 2013, 09:32

From when I did my cam it was out by half a tooth. You don't need a dyno to set it.

Title: Re: Up my rev limit??
Post by: Gavv8 on 10 February 2013, 09:36

What 8v are you using?.. AGG?.. put some pictures up as i've not seen many mk3's on bike carbs.

Title: Re: Up my rev limit??
Post by: ju571n on 10 February 2013, 11:19

Rodger. I'll have a look when I get it all running.

Quote from: Gavv8 on 10 February 2013, 09:36

What 8v are you using?.. AGG?.. put some pictures up as i've not seen many mk3's on bike carbs.

Will do when I build it back up mate. It's in pieces ATM being painted!  :wink:

EDIT: 2E block AKL head.

Title: Re: Up my rev limit??
Post by: sharki786 on 10 February 2013, 13:37

Put pics up anyway :grin:
I thought you was running the agg head too. You got the cross flow head from merica?

Title: Re: Up my rev limit??
Post by: Gavv8 on 10 February 2013, 13:48

So thats a 1.6 head on US spec 2 litre bottom end?

Title: Re: Up my rev limit??
Post by: ju571n on 10 February 2013, 14:45

Yup 1.6 head.. Well the heads are same size internally. Valves are the same size as the old head..

And 2E is early 8v. Erm I'll get some pictures of the bits if I can remeber how!  :grin:

Title: Re: Up my rev limit??
Post by: ju571n on 10 February 2013, 15:06

Here's the latest picture.. The engine is now painted, I might take some more pics if your all nice to me.  :cool:

(http://i1095.photobucket.com/albums/i472/Justin_Coulson/IMG_2789.jpg)

No wires...
(http://i1095.photobucket.com/albums/i472/Justin_Coulson/IMG_2806.jpg)

Lots of wires....
(http://i1095.photobucket.com/albums/i472/Justin_Coulson/IMG_2808.jpg)

Title: Re: Up my rev limit??
Post by: Wayne on 10 February 2013, 16:59

Not going to need a lot more revs than standard tbh, around 6750 is the max I would run on a standard bottom end.

Title: Re: Up my rev limit??
Post by: tweed on 10 February 2013, 17:06

I would like to see more.

Title: Re: Up my rev limit??
Post by: Gavv8 on 10 February 2013, 17:41

Interesting project.. :cool:

Title: Re: Up my rev limit??
Post by: ju571n on 10 February 2013, 18:27

Quote from: tweed on 10 February 2013, 17:06

I would like to see more.

Quote from: Gavv8 on 10 February 2013, 17:41

Interesting project.. :cool:

:embarrassed:

Thanks guys. I may have some interesting pictures to add this week if your interested!  :nerd:

Thanks for looking.