Adey
Posted a lot
Posts: 1,404
Club RR Member Number: 171
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The 1957 "The Dope" Dauphine Adey
@adey1984
Club Retro Rides Member 171
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Jul 21, 2020 22:01:59 GMT
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strange you suggested the infrared temp sensor, I ordered one 15 min ago.
the dash and sensor are matched original 6v items the only thing that has changed in relation to them is the sensor position, it's now in the head and the engine itself.
hopefully when the temp sensor turns up it will reveal more 👍🏻
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Adey
Posted a lot
Posts: 1,404
Club RR Member Number: 171
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The 1957 "The Dope" Dauphine Adey
@adey1984
Club Retro Rides Member 171
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Jul 21, 2020 20:54:18 GMT
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So ive had a good crack at getting it to run cooler. I'm wondering if the fact the original engine ran a mechanical fan is causing an issue? Timing was checked, adjusted a few times and then set to 6 degrees. no change to temp on the dash in any setting. The dash was obviously designed for a dauphine with the sensor in a different place so maybe reading very differently. It used to be in the top of the radiator and now its in the heads water flow about an inch from the cylinder top. My rad fan cuts in at 92c (this is currently my only way to judge engine temp accurately) ive just checked the thermostat and that starts to opens at 89c so isnt fully open until 100c so i've ordered a lower temp item (that said my boiling temp should be about 120ish). I've found the info regarding the oem renault 8 stat and it starts to open at 84c and is fully open at 94c. Now I'm wondering if i have under specked the fan switch? In my head you wouldn't want the fan running every time the stat was fully open or would you? Wouldnt you want a few degrees of room on that too? If anyone could chime in on this that would be great? there seems to be no air in the cooling system at all, I'm confident its bled up well. The car runs really well, no issues at all. No mixing water with oil or smoke out of the exhaust. The water/antifreeze mix keeps its colour and the hoses don't go bar hard or swell as if taking in combustion pressure. I think i really need to sort a better way of measuring the water temp, I'm wondering if i actually have a cooling issue and am just flapping for no reason? ?
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Adey
Posted a lot
Posts: 1,404
Club RR Member Number: 171
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The 1957 "The Dope" Dauphine Adey
@adey1984
Club Retro Rides Member 171
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Jul 21, 2020 20:05:21 GMT
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Air enters from the side, not the bottom. Lean, rich , timing out, all deffo hot running. Try colortune, that always works for us. How's your waterpump? And is there enough advance? Are the weights stuck in the distributor? whats the scoop on the left hand underside for that looks like it does nothing but direct air up towards the rad? opposite side to the fuel tank. I checked the advance and its at 6degrees which is where i thought it should be. I set it back to 0 and it made no difference so ive put it back to 6 btdc. Water pump was good and looked fine when fitting. Ill colortune it tomorrow and try again.
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Adey
Posted a lot
Posts: 1,404
Club RR Member Number: 171
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The 1957 "The Dope" Dauphine Adey
@adey1984
Club Retro Rides Member 171
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Jul 21, 2020 13:57:46 GMT
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As you've lowered it , are the airflow dynamics changed ? hmmmm maybe, but that said i had no issues prior to the engine swap. Ran fine and at temp on the old engine at the same height.
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Adey
Posted a lot
Posts: 1,404
Club RR Member Number: 171
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The 1957 "The Dope" Dauphine Adey
@adey1984
Club Retro Rides Member 171
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Yep i have the fan sucking through in the same direction air flow would be.
Yeah that's what made me question it, though I've never really thought of ignition timing as a heat issue on previous engines the fact I've found 4+ similar threads on ignition timing causing overheating in Renault 8's and none with a popped gasket or major issues i'm confident its that. Will hopefully see later on this eve if the neighbour brings the tools home.
Hopefully not, the rad is in the same place as the original and i think ive panelled it off pretty well, could be some weird turbulence going on in front of the rad causing it though.
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Adey
Posted a lot
Posts: 1,404
Club RR Member Number: 171
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The 1957 "The Dope" Dauphine Adey
@adey1984
Club Retro Rides Member 171
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Jul 20, 2020 21:11:04 GMT
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Have done some more reading and found a fair few posts where otherwise fine running R8's are reading high temperatures, all have the timing incorrectly set. Fingers crossed thats all my issue is
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Last Edit: Jul 20, 2020 21:21:36 GMT by Adey
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Adey
Posted a lot
Posts: 1,404
Club RR Member Number: 171
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The 1957 "The Dope" Dauphine Adey
@adey1984
Club Retro Rides Member 171
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Jul 20, 2020 20:36:24 GMT
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The last of my bits turned up today so i got them fitted. Wiring finished and the temp switch for the rad fan fitted. Tested it at idle and allowed it to warm up and cool down over a few times over. Working great so really happy with that.
Then on to the oils. Engine oil dropped, filter changed and new oil in. Gearbox oil was another story, took about 2 hours to gravity feed it into the box. Still filled up and all good.
Right onto the test drive, its pokey and goes very well doesn't feel too bad at all. Pulls very cleanly in all 4 gears and is probably at the limit of the chassis and brakes that are on there. Only down side is it runs very hot. No leaks, no over pressurising runs very well, no smoke and no mixing of oil but when cruising along it gets hot enough to keep the fan running, so it 92+ degrees. If you pull over and idle itll drop back down on the fan. Anyway a quick chat on the drive with the mechanic neighbour and hes going lend me his timing gear and comp tester again just to set everything up. Ive just twisted and turned the dizzy till it started and left it there. His suggestion was the timing being out followed by carb jetting thought the carb looks to be an renault 8 item. I decided to do a quick search of a french renault 8 website and low and behold the first hit that came up for "température du moteur" was a chap with an r8 whos car was running very hot, fitted a new rad, cowling and electric fan only to find his timing the issue. Maybe and fingers crossed the engines are just a little sensitive to timing.
7 Mile test drive and it hasnt blow up yet.
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Adey
Posted a lot
Posts: 1,404
Club RR Member Number: 171
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Jul 20, 2020 17:09:46 GMT
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@adeyspec
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Adey
Posted a lot
Posts: 1,404
Club RR Member Number: 171
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The 1957 "The Dope" Dauphine Adey
@adey1984
Club Retro Rides Member 171
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Jul 18, 2020 20:31:24 GMT
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Last Edit: Jul 18, 2020 20:34:08 GMT by Adey
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Adey
Posted a lot
Posts: 1,404
Club RR Member Number: 171
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The 1957 "The Dope" Dauphine Adey
@adey1984
Club Retro Rides Member 171
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Awesome stuff! This is a great little car, when are you hoping for a longer road test? Hopefully the back end of next week all being well, I'm waiting for delivery of a rad fan and relay, once thats on i can panel off the rad to help force air through it. Also need to sort a temperature gauge out and a speedo at some point. Need to change out all the fluids, re torque the head and reset the valve clearances.
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Adey
Posted a lot
Posts: 1,404
Club RR Member Number: 171
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The 1957 "The Dope" Dauphine Adey
@adey1984
Club Retro Rides Member 171
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Jul 15, 2020 19:49:30 GMT
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oh look shes parked the other way round. quick pull round the block and it actually very surprising how different it feels and goes! very pokey in comparison to the old setup!
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Adey
Posted a lot
Posts: 1,404
Club RR Member Number: 171
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The 1957 "The Dope" Dauphine Adey
@adey1984
Club Retro Rides Member 171
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Jul 15, 2020 15:49:36 GMT
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SCHOOL BOY ERROR.
yep clutch friction plate would not move freely on the input shaft. Removed cleaned up with a wire wheel and a light amount of grease saw it sliding up and down like a professional pole dancer.
All refitted and working as it should. Busy afternoon for me and not a mistake i will make again. Thanks to all those who took the time to type out help and advice.
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Last Edit: Jul 15, 2020 15:50:14 GMT by Adey
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Adey
Posted a lot
Posts: 1,404
Club RR Member Number: 171
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The 1957 "The Dope" Dauphine Adey
@adey1984
Club Retro Rides Member 171
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Jul 15, 2020 13:05:01 GMT
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Good info there cheers. the clutch friction plate and cover are both NOS items but as you had could be faulty. I guess i will be able to tell more once its removed. Ive prepped the engine for removal now so hopefully itll be in the garage this evening once the kids are asleep and i can have a proper look at it all.
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Adey
Posted a lot
Posts: 1,404
Club RR Member Number: 171
|
The 1957 "The Dope" Dauphine Adey
@adey1984
Club Retro Rides Member 171
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Jul 15, 2020 12:16:20 GMT
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Can you turn the engine without moving the wheels when the clutch is depressed? Do you still have the original pressure plate and is it the same height as the one fitted?
nope, what i can do is put it in gear and put the brakes and clutch on and listen to it screech and slip the clutch. The more i look and mull over it the more i think the clutch plate isnt moving on the input shaft freely. Thinking back it was a ball ache to get them together. I should of probably looked closer back then.
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Last Edit: Jul 15, 2020 12:23:28 GMT by Adey
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Adey
Posted a lot
Posts: 1,404
Club RR Member Number: 171
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The 1957 "The Dope" Dauphine Adey
@adey1984
Club Retro Rides Member 171
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Jul 15, 2020 12:13:22 GMT
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can you change/alter the length of the push rod? yes though its looks like it will make no difference. I can manually actuate the clutch arm until its bottomed out and out of travel.
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