Club 80-90 Forums

Once I started adding up the rest of the bits I'd need to make up a complete new system it might make more sense to try DIY-ing a crossover pipe right enough, especially if it's not even going to cool any better once it's all swapped!

Thanks for your advice

Cheers

David

Great stuff, thanks all  :ok  Is there any advantage to the late system over the early one? Does it "flow" any better? Yes no problem with any of the bolt on parts . it does get a little tricky trying to put a early cooling system on a late 2.1 because oil cooler . but it’s possible , I di...

My van ('83 DG manual) has the early exhaust & cooling set up, but the metal crossover pipe and a few other bits are bodged or have seen better days. It has the 38mm plastic pipes and I have a few other parts of the late cooling system so I was thinking of buying the missing parts & swapping...

That's a very clean and healthy engine. I'd be delighted with that result.  I rebuilt the engine and the carb myself, so that's good to hear! It doesn't seem have any other symptoms of a lean mix under load that I can tell apart from the high temps, but I realise that could be down to other things....

Fair enough, I expected it to be closer to 1.5% but maybe I'm just reading too much into it!

Thanks

David

Hi all I got an emissions check as part of the MOT which I wasn't expecting, but hey ho. Anyway it appears to show a very low CO of 0.15% which is about 10x less than the manual says it should be (1.5%) assuming it was done on a warm engine at idle. Engine is standard 1.9 DG on carb. The engine does...

Can't detect any wobble in the impeller by hand, it all seems solid. Thermostat is fitted with the spring side facing up, and after taking the housing apart it looks like it won't fit any other way. It's brand new from Brickwerks so highly unlikely to be stuck, but I'll check it in hot water next ch...

ajsimmo wrote:What cam did you use for the rebuild?

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I was lucky enough to get a genuine DG NOS from (I think) VW Heritage before they went out of stock. Had to swap the gear, tried rivets but ended up using M7 bolts.

Sorry about the delay in replying, finally managed to get another look at this at the weekend there. Stripped the pump, couldn't feel any play in the bearing, impeller is metal and looks to be in good condition although it's not a brand new pump. Thermostat housing isn't in the best of shape but sti...

Still happening sadly! Unfortunately this kept on getting pushed down the list by other stuff so I'm not much further forward, I decided to concentrate on getting the work done for the MOT first so I could actually test drive it, then once it passed it was the interior, work on the house in between ...

Good point, I should have said it was a new silencer and tailpipe, so there was no soot on it at all before. Do you reckon I'm better setting hot idle and mixture with the vac disconnected then?

Ah OK fair enough, in that case the tailpipe is black, and I am definitely adjusting the correct screw on the carb. I don't have anything else to test the meter against unfortunately, my daily driver is a diesel so that's no use :( I'll have another go at adjusting it again at the weekend, and I'll ...

NicBeeee wrote:Is this issue possibly caused by a blocked bleed ring.

This van still has the early cooling system, no bleed ring.

Don't worry about dumb questions, I'm definitely no expert! Never seen the flat-4 before this van, although I've rebuilt a couple of other engines in the past. Exhaust is very clean, no visible smoke. Sadly, the engine I'm using is not the original, the van was a DF from the factory and it was prett...

OK, another round of testing done! With the fan running from startup, the temp gauge stabilised at about 2/3rds while idling. I managed to borrow a combustion gas detector, checked the expansion tank with it and it didn't show any signs of CO2 in the coolant. Tried it in the coolant tank as well onc...