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-   -   Volvo 740 Turbo Conversion - Street/Track Build (https://forums.turbobricks.com/showthread.php?t=355086)

Pete.M 05-23-2020 05:14 PM

Volvo 740 Turbo Conversion - Street/Track Build
I guess I didn't post here previously because the quality of projects is often very high. However, some friends have convinced me to contribute to a YouTube channel so now I'm whoring it out everywhere.

I'm going to keep it short, and suggest that you watch the video for a run-down of the work done so far.

It was originally 2.0 non-turbo K-Jet. I've fitted a B230FK with LH2.4 & M90.


Pictures for those who just want a quick snapshot:
















JW240 05-23-2020 05:39 PM

Nice vid (halfway through). Exhaust turned out great!

DET17 05-23-2020 05:47 PM

Nice! Always a joy to see more of these 7/9 sedans, generally unloved on TB. Many of your mods look darn familiar, and I'll bet that baby will scoot! Going to watch the video soon.......continue to share, these sedans are finally gaining some traction here.

MadDog_945 05-24-2020 04:03 AM

nice car!

what is this front frame thingy? never saw that?

Pete.M 05-24-2020 05:37 AM

Thanks. That's an underbody brace made by Viking Fabrications, here in UK.

MadDog_945 05-24-2020 08:13 AM

cool, they dont have a webshop?

Pete.M 05-24-2020 12:32 PM

I think he's only using Facebook.

Swedbrick 05-24-2020 05:56 PM

Good stuff! I had a look at Viking performance and will probably have to buy some now:-P

Btw, if you want a 3d printed holder for the 128x32 oled, I was planning on making one for the 7-series cluster, so it wouldn't be too much of a hassle to make a second one with the settings dialed in:) I'm guessing it's an arduino with a mxp pressure sensor of some sorts?

Pete.M 05-25-2020 02:50 AM

Cool, I'd be interested to see how it turns out. My current cut-out isn't particularly clean so I'm sure the printed version would be better. Yes mxp5700ap sensor.

DET17 05-25-2020 08:55 AM

Nice video, details your improvements quite well! I really like your exhaust work.... apparently no CAT is required in the UK, or is this an off road vehicle only? You did better than I did in tucking your exhaust higher..... my 3" DP really is too long and pushes the system too low in the forward section. I also run a 2.5" exhaust over axle and thru my TME muffler. As I drive my car daily, I added a VIBRANT resonator to remove the 4 cylinder drone at highway speeds.

Overall, impressive. Looking forward to more videos, and hopefully you can get your sheet metal restored on the 740 Hoon Saloon :-)

Pete.M 05-25-2020 03:02 PM

Cheers. No CAT required pre-'93 here.

MadDog_945 05-25-2020 03:33 PM


Originally Posted by Pete.M (Post 6081922)
Cheers. No CAT required pre-'93 here.

uh.. that wouls be awesome.. i hate those flameeaters ;)

rents 05-31-2020 06:13 PM

Nice 740. I bought Viking Performance's old 740 turbo that he modded to the max. Also looking to track it at some point. In your videos you sound Scottish, still live up here?

Pete.M 06-01-2020 02:45 AM

Cheers. I think I remember that car. For my sins I moved to NW England.

Pete.M 06-30-2020 01:17 PM

Fitted a fire extinguisher, tidied the wiring, and diagnosed a fuelling problem.

Details in the video: https://youtu.be/RKgu11CbCVU


MOT coming up!

Pete.M 08-05-2020 04:21 PM

The 740 somehow passed the MOT at the start of July despite a seized strut top bearing. They must have liked the car. I had to buy new strut top/camber adjustment assemblies to suit the BC coilovers. (Went with TXR motorsport) Those took over two weeks to arrive. I couldn't do much driving until that was sorted.

It's great fun to drive. The only real problems that were immediately apparent are that the viscous fan is worn out, and the propshaft centre carrier needs replaced. The movement in the carrier has been amplified by everything else being so solid. (Stiff engine mounts and heim joints on rear axle)

I cleverly arranged two track days right next to each other - 3rd and 4th of August. It turned out I was right to be worried about this because a heater hose burst open on the first track day. It was a fairly easy fix with some silicone hose, but I want to order the correct part. Then on the second track day, I was having further issues with the cooling system. The worn out fan being one issue. At first we were worried that the engine was pushing exhaust gas into the system, since coolant was pushing out of the cap on the reservoir. With further trials, it looks like it's just a bad seal on the cap.

The power steering can't handle more than a couple mins of hard driving. Not only that but it started running on three cylinders at the end of the day. We couldn't see anything wrong on the ignition side. It quickly cleared up when I started driving home, but the underlying problem definitely hasn't gone away.

I still got plenty of time on the track. Here's some footage:



740atl 08-14-2020 05:47 AM

That’s a really good looking car.

BillyMaysHere 08-15-2020 08:58 PM

Too much power steering fluid pressure.

Pete.M 08-16-2020 02:40 AM

Thanks, the camera makes it look better than it really is.

Possibly. First of all I'm trying different fluid. I had some generic power steering fluid which doesn't have any specifications. Now I'm using ATF that meets Dexron III.

I've got a few hoses, a thermostat, and distributor seals to replace. Plus maybe fit the electric fan.

Next event is a wet drift day in September.

JW240 08-16-2020 09:07 AM

Looking good!

Similar experience with the power steering on the track, even with underdrive crank pulley. Forgot which fluid but it was some quality.

German market 940's had a very short extra pigtail in the PS return line to shed a little bit of heat.

I'm going to get some 12mm? hydraulic tubing and some Ermeto couplers and bend up a loop parallel with the steering rack, or in front of the intercooler. Should cost only a few quid and probably fix the issue. Or maybe a bigger metal reservoir will shed more heat too.

tomasss 08-17-2020 02:47 AM

Great looking 7!
Where did you get that "740" sticker on the rear door?

Pete.M 08-17-2020 02:58 AM

I used to sell those stickers on ebay. Unfortunately got none left. I think I still have the original image if you want to get some made.

Pete.M 10-02-2020 10:14 AM

Some of the issues from the previous track days have been sorted. I put better power steering fluid in (ATF). Changed the viscous clutch on the fan - massive difference. And of course I replaced that heater hose, plus the two little coolant hoses that go to the oil cooler.

I decided to go to a wet drift day despite having an open differential. It was still good fun. I had never really used the handbrake to initiate until now, so that took a little getting used to.


Now I've got a squeaking clutch release bearing. And very creaky rear suspension, but that may be due to moving the whole axle over for alignment purposes.

Hopefully I can make it out to another track day this year.

brickborg 10-02-2020 04:32 PM

Think I recall this from Retro Rides, loved it there and love seeing it here too. Anyone who's willing to spring for legit Stack equipment and stick them in a beautiful boosted 740 is rad in my book.

Pete.M 10-03-2020 03:06 AM

Cheers. I do love the triple stack gauges. Your Jurbo is rather excellent as well. I missed out on two 740's in that light blue colour. I still want one.

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