MK5 Golf GTI

All Things Mk5 => Modifications & Technical Area => Technical Workshop => Topic started by: Vwgtiking on June 24, 2015, 05:59:37 pm

Title: 16 valve
Post by: Vwgtiking on June 24, 2015, 05:59:37 pm
Just found out today that the GTi is only 16v. The mk4s were 20v.

Why the drop in valves??
Title: Re: 16 valve
Post by: Ricky123 on June 25, 2015, 04:59:35 pm
It's a completely different engine  :stupid:
Title: Re: 16 valve
Post by: Vwgtiking on June 25, 2015, 06:02:41 pm
Lol I know that. Just wondering why they dropped a few valves?
Title: Re: 16 valve
Post by: AJP on June 25, 2015, 06:10:15 pm
More valves doesn't neccessarily mean more power or efficiency.

Whatever the reason, I'm glad the TFSI was developed. It's twice the engine any bland 1.8T ever was.
Title: Re: 16 valve
Post by: Ricky123 on June 25, 2015, 09:11:01 pm
^ couldn't agree more.. I was never a fan of the 1.8t, owned a couple but not for long, the tfsi is reason I came back to vw
Title: Re: 16 valve
Post by: Vwgtiking on June 25, 2015, 09:12:22 pm
I quite like my old 1.8t.
Title: Re: 16 valve
Post by: AJP on June 25, 2015, 09:42:33 pm
Quote from: Vwgtiking on June 25, 2015, 09:12:22 pm
I quite like my old 1.8t.
I didn't 'dislike' mine, but pound for pound what the 2.0T does with a k03 is a different league. From stock the TFSI feels responsive and sharp. Can't say that about the AGU I had. Even mapped.
Title: Re: 16 valve
Post by: Vwgtiking on June 25, 2015, 09:59:10 pm
I agree with that. Very responsive! And even better after remap!! Also got my new dv revD and Coilpacks fitted today!!
Title: Re: 16 valve
Post by: Ricky123 on June 25, 2015, 10:36:21 pm
Quote from: Vwgtiking on June 25, 2015, 09:12:22 pm
I quite like my old 1.8t.

It wasn't a bad engine by any means. All comes down to personal preference.
Title: Re: 16 valve
Post by: AJP on June 27, 2015, 10:14:11 pm
Certainly not a bad engine. Plenty of power to be had with a k04. But I just found them lacking a bit of soul.

Saying that, mine was an early k03 engine, so hardly the pick of the bunch. I went round Oulton Park in the Shark Performance mk1 Octavia (BAM, anti-lag mapping etc) and that thing pulled hard.

But compared to the performance of a k04 TFSI it's a different game completely.
Title: Re: 16 valve
Post by: Vwgtiking on June 27, 2015, 10:20:54 pm
My gti is k03 tfsi
Title: Re: 16 valve
Post by: AJP on June 27, 2015, 10:28:37 pm
Quote from: Vwgtiking on June 27, 2015, 10:20:54 pm
My gti is k03 tfsi
Mine too. Just making the comparison pound for pound!
Title: Re: 16 valve
Post by: Vwgtiking on July 03, 2015, 07:48:40 am
Mine sounds like a tractor at idle.
Title: Re: 16 valve
Post by: Teutonic_Tamer on July 16, 2015, 05:00:02 pm
Quote from: Vwgtiking on June 24, 2015, 05:59:37 pm
Just found out today that the GTi is only 16v. The mk4s were 20v.

Why the drop in valves??

They needed to make room for the fuel injector - which, on FSI engines, squirts directly into the combustion chamber.  It is akin to a twin spark head - only instead of two spark plugs per combustion chamber, you have one plug and one injector.
Title: Re: 16 valve
Post by: Teutonic_Tamer on July 16, 2015, 05:00:54 pm
Quote from: Vwgtiking on July 03, 2015, 07:48:40 am
Mine sounds like a tractor at idle.
Most do!!!  :grin: