Cleaning pistons?
Moderators: User administrators, Moderators
Cleaning pistons?
1988 Autohomes Karisma DJ 2.1 Auto
- 937carrera
- Registered user
- Posts: 3599
- Joined: 05 Apr 2015, 19:29
- 80-90 Mem No: 16333
- Location: N Yorks.
Re: Cleaning pistons?
I would say they are fine, you might want to wipe the underside a little more, you'll find that will come off easily with a cloth. More for cosmetic and future diagnostic rather than function.
I'm assuming the ring grooves are clean
I'm assuming the ring grooves are clean
1981 RHD 2.0 Aircooled Leisuredrive project, CU engine
1990 RHD 1.9 Auto Sleeper with DF/DG engine
1990 RHD 1.9 Auto Sleeper with DF/DG engine
- itchyfeet
- Registered user
- Posts: 12427
- Joined: 23 Jul 2007, 17:24
- 80-90 Mem No: 12733
- Location: South Hampshire
Re: Cleaning pistons?
yes fine, as said scrape out ring grooves with old broken ring and make sure oil holes in ring groove are clear
where is your build thread.
Nice DJ piston there.
where is your build thread.
Nice DJ piston there.
Re: Cleaning pistons?
Build thread starts here! Just doing top end rebuild as black rubber head seal allowed coolant to leak out! Got all parts and a little time so hoping to over the coming weeks! Three more pistons to go! Also, bought new barrels from brickwerks which came with MV pistons, only using the barrels! Question is they came with new gudgoen pins can I use these in DJ pistons or stick with original?
1988 Autohomes Karisma DJ 2.1 Auto
- itchyfeet
- Registered user
- Posts: 12427
- Joined: 23 Jul 2007, 17:24
- 80-90 Mem No: 12733
- Location: South Hampshire
Re: Cleaning pistons?
I'd stick with origional gudgeon pins
you can buy barrels on their own from Custom and commercial
you can buy barrels on their own from Custom and commercial
- Oldiebut goodie
- Registered user
- Posts: 7293
- Joined: 18 Apr 2008, 01:19
- 80-90 Mem No: 11135
- Location: Eastern Angle
Re: Cleaning pistons?
When I was a teenager a mate of mine used to build his own drag racing engines for his bikes - every surface was polished to a mirror finish, inlet, exhaust ports and pistons were all finished with jeweller's rouge after smoothing. But then the engine was only used once before being stripped and redone. He reckoned that it was worth it for that extra fraction of a second.
1.6D 2019 VW T-Cross
200hp VW T6
1̶Y̶ ̶1̶9̶8̶7̶ ̶H̶i̶-̶t̶o̶p̶ ̶C̶a̶r̶a̶v̶e̶l̶l̶e̶
5̶0̶8̶d̶ ̶M̶e̶r̶c̶
200hp VW T6
1̶Y̶ ̶1̶9̶8̶7̶ ̶H̶i̶-̶t̶o̶p̶ ̶C̶a̶r̶a̶v̶e̶l̶l̶e̶
5̶0̶8̶d̶ ̶M̶e̶r̶c̶
- CovKid
- Trader
- Posts: 8409
- Joined: 30 Apr 2006, 13:19
- 80-90 Mem No: 3529
- Location: Ralph - Coventry (Retired)
- Contact:
Re: Cleaning pistons?
Like thats going to make a difference in a T25
Roller paint your camper at home: http://roller.epizy.com/55554/" onclick="window.open(this.href);return false; for MP4 download.
Re: Cleaning pistons?
Ok, all cleaned! Any special tips for installing piston rings before I attempt it?
1988 Autohomes Karisma DJ 2.1 Auto
- itchyfeet
- Registered user
- Posts: 12427
- Joined: 23 Jul 2007, 17:24
- 80-90 Mem No: 12733
- Location: South Hampshire
Re: Cleaning pistons?
Ciaoflyer wrote:Ok, all cleaned! Any special tips for installing piston rings before I attempt it?
You will struggle to get the DJ top ring on without ring expander tool unless you have gloves and strong thumbs, they are strong and sharp, read the manual as to ring gap orientation and remember that the arrows point to flywheel and so 1&2 are the other way up to 3&4
compressions Rings have a top also
I lay barrels out as they go on with numbers and arrows on and so you don't make errors, then fit pistons straight into barrels.
http://forum.club8090.co.uk/viewtopic.p ... 0#p8164830" onclick="window.open(this.href);return false;
Re: Cleaning pistons?
Cheers, I assume you mean the arrow on top of piston to flywheel?
1988 Autohomes Karisma DJ 2.1 Auto
- itchyfeet
- Registered user
- Posts: 12427
- Joined: 23 Jul 2007, 17:24
- 80-90 Mem No: 12733
- Location: South Hampshire
Re: Cleaning pistons?
Ciaoflyer wrote:Cheers, I assume you mean the arrow on top of piston to flywheel?
yep, somebody this week got them upside down and had to take the head off, they have to go the right way up.
make sure you read the manual, every last word then read it again.
When you think you know what you are doing read it again.
Seen a few people have to take the engine apart because of school boy errors that were detailed in the manual.
http://syncrosport.com/info/manual/VW_T ... hanics.pdf" onclick="window.open(this.href);return false;
Re: Cleaning pistons?
Ok put in oil ring, is this correct as it differs from original, the red marks show where joins are!
1988 Autohomes Karisma DJ 2.1 Auto
Re: Cleaning pistons?
itchyfeet wrote:Ciaoflyer wrote:Ok, all cleaned! Any special tips for installing piston rings before I attempt it?
You will struggle to get the DJ top ring on without ring expander tool unless you have gloves and strong thumbs, they are strong and sharp, read the manual as to ring gap orientation and remember that the arrows point to flywheel and so 1&2 are the other way up to 3&4
compressions Rings have a top also
I lay barrels out as they go on with numbers and arrows on and so you don't make errors, then fit pistons straight into barrels.
http://forum.club8090.co.uk/viewtopic.p ... 0#p8164830" onclick="window.open(this.href);return false;
My barrels are new so can I number them as I choose one for each piston?
1988 Autohomes Karisma DJ 2.1 Auto