Speedy88's Volvo 740 Turbo

A global place for general discussion (Volvo, V3M or non-Volvo related topics).
Please introduce yourself here, your Volvo 300 hobby...
NO technical support, parts requests or car advertisements here
User avatar
Speedy88
Posts: 4057
Joined: 04 May 2009 11:52 pm
Location: Bristol

Re: Speedy88's Volvo 740 Turbo

Post by Speedy88 » 20 Nov 2011 11:32 pm

Meh, I'll weld around gas tanks. No bother for someone as invincible as me :wink:

That's interesting that it really is that easy to make it lock at higher speeds. I'm confused though, surely a permanently engaged locker will be just as difficult to park as a welder? I'm confused as to how that works. Research time!
'88 340 Williams (Sold)
'85 360 GLS - Drift project (Sold)
'77 Colt Sigma
'96 940 Drift project

User avatar
SteveP
*** V3M DONOR ***
Posts: 7943
Joined: 21 Sep 2004 12:45 pm
Location: Coventry, UK

Re: Speedy88's Volvo 740 Turbo

Post by SteveP » 21 Nov 2011 01:32 am

It wont be permanently engaged as such, it will just engage at all speeds when needed (usually under a hard launch or tight corner)
1989 - Volvo 360 GLT
1985 - Volvo 360 GLS
2008 - Volvo S60 SE Lux

User avatar
foggyjames
*** V3M DONOR ***
Posts: 9361
Joined: 29 Jan 2004 04:20 am
Location: Nottingham, UK

Re: Speedy88's Volvo 740 Turbo

Post by foggyjames » 21 Nov 2011 01:47 am

A locker only locks up when one wheel spins. It's like an LSD, but locks solid. Better for teh doriftoooooo.

The mod is a piece of piss, especially if it's off the car...
http://www.turbobricks.com/mods.php?content=art0027

cheers

James
VOC 300-series Register Keeper
'89 740 Turbo Intercooler
'88 360 Turbo Intercooler
'85 360 GLT
'81 343 GLS R-Sport
'79 343 DL
'70 164
...and some modern FWD nonsense to get me to work...

User avatar
Speedy88
Posts: 4057
Joined: 04 May 2009 11:52 pm
Location: Bristol

Re: Speedy88's Volvo 740 Turbo

Post by Speedy88 » 21 Nov 2011 03:08 pm

Ok yeah, this is a much better option. Sweet!
'88 340 Williams (Sold)
'85 360 GLS - Drift project (Sold)
'77 Colt Sigma
'96 940 Drift project

classicswede
*** V3M DONOR ***
Posts: 5465
Joined: 25 Apr 2005 06:52 pm
Location: Anglesey North Wales
Contact:

Re: Speedy88's Volvo 740 Turbo

Post by classicswede » 23 Jan 2012 05:38 pm

Speedy88 wrote: Interesting on your opinions on LPG, I've found those opinions across the board. However speaking to specialists, friends and Steve off VOC, I've also found those opinions tend to follow DIY jobs and the such. Steve's car was done by Dai's lot, he told them he wanted to do some turbo modifications and they fit a larger bias valve? I think it was? Basically it was already set up to allow tuning. The thing works flawlessly and as it was a sport he was already at 190hp.

If I get it done through a company, there's always men I can go back and shout at until it works properly.
So far the highest power 4 cylinder LPG conversion I have done was dyno'd 380BHP (flywheel). There are very few installers that know what they are doing with high power engines especialy the Volvo's. The problem with them is they run full group injection and that causes issues that need to be overcome to get full top end power and good fuel control at idle. The system we use like on Steve's car filters out the second pulse of teh fuel group injection so the LPG injector fires only once per engine cycle like is would on a sequtialy fired engine. Depending how much power you are looking for you might need to fit a bigger fuel line, correctly selected reducer with suitable fuel pressure and high flowing injectors.

The LPG system has a lot of fail safe features built in. If the fuel pressure drops it will automaticaly switch back to petrol, if the injectors max out (petrol or gas) it will revert back to petrol and if it detects an electrical failure it will switch back to petrol and alert you.

Sadly the majority of installers just want to throw on a standard cheap kit take your money and say good bye. The Ploish lot that have setup a couple of places in south wales are some of the worst from what I have seen. Have a look through the LPG section on the VOC site

Oh and did I mention that LPG is better at handling high boost due to its octane rating aroun 115ron !!
Dai

Please email me directly on dai@classicswede.co.uk

http://www.classicswede.com

phone/text 07824887160

Web shop http://www.classicswede.co.uk/

Image

User avatar
Speedy88
Posts: 4057
Joined: 04 May 2009 11:52 pm
Location: Bristol

Re: Speedy88's Volvo 740 Turbo

Post by Speedy88 » 23 Jan 2012 06:32 pm

Brilliant info, thanks Dai. Although I don't have the 740 any more there's a good chance I'll be wanting to do the 2.3 turbo conversion in a few years. Plus fuel will be more expensive by then...
'88 340 Williams (Sold)
'85 360 GLS - Drift project (Sold)
'77 Colt Sigma
'96 940 Drift project

Post Reply