Cracking and banging of of exhaust

[advinnie]

You running a dyno or alternator don’t know if that will make any difference?
I’m running a alternator.
From what I’ve read the coil should see battery voltage at all times. I will recheck mine tomorrow to see if the coil is seeing exact battery voltage.

[advinnie]

Just a thought there’s not a voltage controller in the stock Vw wiring that only allows the coil to see 12 volts?
Cause now I’ve wired the coil to battery I have a funny feeling that the coil will be receiving 14.7 volts at some point cause that’s what the battery sees from the alternator at a certain rpm if that makes sense?

[buguy]

Yeah I just checked again and its less than 9v at idle. I guess thinking about it now I should have revved it up to see how much it changed. I believe this is a 1975 engine so it should be an alternator. I don't really know how to tell the difference to be honest.

[petew]

Alternator



Generator



Alternator is better, but a generator will provide charge at any revs. Alternators have to have certain speed to start making charge.

Edit: in this pic you've got an alternator...

https://www.thesamba.com/vw/gallery/pix/1664965.jpg

[buguy]

Thanks!

[advinnie]

Who’s engine is that in the link?
Was wondering where that got that exhaust manifold from and what size it is

[petew]

Buguy's

[buguy]

That is just a 1 3/8" old old old header that I cut up and turned, welded, and hit with a hammer 'til it worked.

[advinnie]

I see I need a new one soon mine is not in the best of shapes. I’m guessing you can’t make me a new one up and stick it in the post I’m only in the UK so justvdown the road of you

[buguy]

In a couple weeks you can have that one! I'll just bring it to you! I have a boat! It's not inn good shape either. I found several pin holes and its so thin now that you can barely weld it without blowing right through.

[advinnie]

Nice one cheers mate
I have a small row boat so I will start out now and meet you half way

[advinnie]

Well I will not be fitting and running my new boost controller this weekend it turned up today and it’s broken the company are willing to give a full refund there’s no problem there just bloody pissed of it turned up broken

[buguy]

Awwww. That's the worst! So just pull the waste gate hose off and watch your boost gauge!

[advinnie]

That’s why one to gain max boost
All my little 1600 can do with this turbo is produce 14.5psi @ 4900rpm so why just the wastegate

[buguy]

I'm in the same boat. I'm not sure I can even get that much boost yet.