Club G40 Forum

Technical => Superchargers / G-Lader => Topic started by: PeteG40 on April 29, 2014, 09:34:50 pm

Title: Some of the best porting available! and affordable!
Post by: PeteG40 on April 29, 2014, 09:34:50 pm
Recently had some work done by JNL Racing, they used to do Gwerks stuff at one point.  This is GOOD.  Stage 5 charger.  I sent it stripped without bearings and it came back ported and aqua blasted for about £150.  Stage 5 is pretty much as PSD full blend but done nice and smoothly.   Be interesting to see the results.  Would deffo recommend!

(http://i90.photobucket.com/albums/k258/peteg40/P1000536_zpsdf6acb7e.jpg) (http://s90.photobucket.com/user/peteg40/media/P1000536_zpsdf6acb7e.jpg.html)

(http://i90.photobucket.com/albums/k258/peteg40/P1000536_zpsdf6acb7e.jpg) (http://s90.photobucket.com/user/peteg40/media/P1000536_zpsdf6acb7e.jpg.html)(http://i90.photobucket.com/albums/k258/peteg40/P1000536_zpsdf6acb7e.jpg) (http://s90.photobucket.com/user/peteg40/media/P1000536_zpsdf6acb7e.jpg.html)

(http://i90.photobucket.com/albums/k258/peteg40/P1000556_zps8ee58ca3.jpg) (http://s90.photobucket.com/user/peteg40/media/P1000556_zps8ee58ca3.jpg.html)
Title: Re: Some of the best porting available! and affordable!
Post by: Jezza-7 on April 29, 2014, 09:44:47 pm
Looks very nice mate.

Very tempting to split mine and send if off before i rebuild it.
Title: Re: Some of the best porting available! and affordable!
Post by: Freddy77 on April 29, 2014, 09:54:35 pm
Might be worth doing my spare one if im gonna strip it down
looks a lot smooth compared to other companies about
Title: Re: Some of the best porting available! and affordable!
Post by: physicsfool on April 29, 2014, 10:35:08 pm
Very nice, how easy is it to get hold of standard un-ported chargers, or can they port already partly ported ones?
Title: Re: Some of the best porting available! and affordable!
Post by: PeteG40 on April 30, 2014, 07:24:28 am
Well stock casings are easy enough to find.. think taylor has parts if not whole.

Also they should be able to take out stage 4s to the level above.

Title: Re: Some of the best porting available! and affordable!
Post by: paulg40 on May 12, 2014, 11:50:17 pm
I think this looks amazing, so good its like its factory!
Having just finished rebuilding my PSD full blend which i bought a few weeks ago I can't believe how messy the porting job is! can't remember mine being that bad back in 2004! but then maybe they started to rush them? either way the porting is pretty crappy on this one.

Had a look at my Jabba S4 as I took it off this afternoon and I have to say Jabba porting is far better and although more material has been taken out of the full blend at the end of the outlet port jabba have taken more off the supports on the outlet on their S4 porting. Anyway I think will do a comparison at some point but I was going to get an R1 from jabba on the charger I just took out but instead think I'll send it to JNL as it looks pretty bloody good. Top find!  ;D

Title: Re: Some of the best porting available! and affordable!
Post by: Tav on May 27, 2014, 09:52:53 pm
JNL porting and cheeky Pete rebuild, could be good!
Title: Re: Some of the best porting available! and affordable!
Post by: G40-Yoshie on June 02, 2014, 08:31:59 pm
This is my charger!

After doing my share of digging about I had doubts about where to send the charger after seeing so many negative reviews about roughly finished porting and rebuilds re-using original bearings and seals.

I spoke to Pete about porting and rebuilding the charger as he has a good reputation on the forums (and rightly so), of course he obliged and also recommended JNL for porting. I got in touch with Jean-paul at JNL and I really couldn't recommend him enough, just check out some of his work on Facebook. Jean-paul told me they used to do all the porting work for G-werks and also sent over a PDF of a Supercharger article he wrote published in PVW back in the day.

With both Pete & Jean-paul there was good communication right from the start, progress updates, a fantastic quality of work and both genuinely sound guy's showing enthusiasm and passion about what they're doing. Quite refreshing to see compared to so many other companies i've spoken to.
Title: Re: Some of the best porting available! and affordable!
Post by: JoeH on June 03, 2014, 02:29:52 pm
Do JNL offer a rebuild service too?

I assume this is the company: http://www.jnlracing.com/

Herts Beds border
Title: Re: Some of the best porting available! and affordable!
Post by: PeteG40 on June 03, 2014, 03:33:59 pm
I've heard he will if u supply a kit.

I do odd ones but I take me time!
Title: Re: Some of the best porting available! and affordable!
Post by: JoeH on June 03, 2014, 10:02:01 pm
Interesting, have to contact them for prices.

Looks like they are engine building specialists!
Title: Re: Some of the best porting available! and affordable!
Post by: JoeH on June 06, 2014, 02:46:20 pm
Did you have the outlet elbow ported to match as well?
Title: Re: Some of the best porting available! and affordable!
Post by: PeteG40 on June 06, 2014, 03:17:41 pm
just port matched... not ported out.
Title: Re: Some of the best porting available! and affordable!
Post by: Jester on June 06, 2014, 07:59:51 pm
So potentially could send of a stage4 to them and they'll port it to stage 5 and make it nice and shiny for £150? does that include posting it?
Title: Re: Some of the best porting available! and affordable!
Post by: PeteG40 on June 06, 2014, 09:08:27 pm
Plus postage and you need to strip it first!
Title: Re: Some of the best porting available! and affordable!
Post by: JoeH on June 09, 2014, 09:52:10 pm
I contacted JNL and thought i'd share the communication (I asked if they can fit G-lader to car, and what there prices are, assuming you provide rebuild kit):


Hi sorry for delayed reply been a bit manic this week.

Being a machine shop we dont work on cars so the charger would need to be removed and refitted by either yourself or appointed by you.

If you are supplying the rebuild kit prices are as follows.

Stock rebuild £100 excl parts but includes aquablasting the case for an as new look.

Street/strip porting £200 incl stock rebuild.

Race porting (requires exh housing to be supplied)  £250 incl stock rebuild.

Cheers JP '



I then asked whether the charger needs stripping (& if it's ok to post it on clubg40):


All you need to do is remove charger from car and supply rebuild parts.

Cheers JP
Title: Re: Some of the best porting available! and affordable!
Post by: Tav on June 09, 2014, 10:20:58 pm
Looks promising, mine needs done....wouldn't mind porting tidied up whilst it's getting put back together.  Getting a rebuild kit from Pete and sending it all down would be minimal hassle and at £100...it'd prob. save a whole day of screwing around.
Title: Re: Some of the best porting available! and affordable!
Post by: JoeH on June 09, 2014, 10:25:41 pm
Thats what I thought too Tav.
Also think postage is on top of the above costs.
Title: Re: Some of the best porting available! and affordable!
Post by: PeteG40 on June 11, 2014, 12:29:48 pm
Its not really minimal hassle as to strip and remove bearings and clean to send to jnr is about 3/4 of the time spent rebuilding one!
Title: Re: Some of the best porting available! and affordable!
Post by: Tav on June 11, 2014, 04:50:59 pm
He said just to remove it from the car and send it down complete though?
Title: Re: Some of the best porting available! and affordable!
Post by: PeteG40 on June 11, 2014, 06:21:25 pm
ah that sounds ok then!
Title: Re: Some of the best porting available! and affordable!
Post by: JoeH on June 11, 2014, 08:14:02 pm
Yer, Pete you said you had to strip yours, so I double checked and JP @ JNL said, just remove from car.
So realistically JNL can be added alongside the likes of yourself, OCD, Jabba, et al as people that can receive posted chargers for rebuild. I guess with the added benefit of their porting skills...


Title: Re: Some of the best porting available! and affordable!
Post by: PeteG40 on June 11, 2014, 08:45:24 pm
Your charger is very nice Joe - its been cleaned tonight and relieved of its bearings!
Title: Re: Some of the best porting available! and affordable!
Post by: JoeH on June 11, 2014, 08:57:11 pm
Your charger is very nice Joe - its been cleaned tonight and relieved of its bearings!

eh it's not mine, mines on my car! you rebuilt mine around 3 years ago...
Title: Re: Some of the best porting available! and affordable!
Post by: PeteG40 on June 11, 2014, 09:13:32 pm
wrong joe - tis another joe - haha -sorry, I lose track.
Title: Re: Some of the best porting available! and affordable!
Post by: jeff.b on August 17, 2014, 09:39:30 am
Sorry to gate crash but being a former g40 owner I'm very interested in all of this but I'm just in the process of getting a golf g60 and was wondering what was best route for charger overhaul as I would have used g werks or something on south coast psd?

Hope you guys can help and not to insulted with the move to the golf  :o
Title: Re: Some of the best porting available! and affordable!
Post by: JoeH on January 16, 2016, 08:52:03 pm
Hey Peteg40 (and all others interested in charger rebuilding), this is my charger, with your service parts (on the right) at JNL racing, note all the old parts are from when you serviced it by the previous owner.

https://www.facebook.com/JNLRacing/photos/pb.359152217446726.-2207520000.1452977160./1179901198705153/?type=3&theater



Title: Re: Some of the best porting available! and affordable!
Post by: Fifress on May 19, 2016, 11:45:14 am
Is this still available? Anyone got results/reviews on performance afterwards?