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Author: Subject: Custom Catch Tank design - update 8th Oct.
02GF74

posted on 3/10/07 at 10:47 AM Reply With Quote
quote:
Originally posted by DarrenW
No comments ref sump?? Ill add dims of dipstick and tube as well soon. Engine is from Granada so dont know if that makes a difference.


that reminds me of the other thing I forgot to say earlier.

If you have too mcuh oil in the sump, the oil is gonna get whacked by the crank so there will be more droplets splashing around in the block.

It should be possible to overfill the engine if you eitehr have wrong dispstick or wrong dispstick tube - is that possible?

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DarrenW

posted on 3/10/07 at 11:00 AM Reply With Quote
Wrong dipstick / tube is very possible as im told the engine is from Granada (the guy i bought engine from bought the full car and removed low milage engine for his mint Mk2 Escort).

I have attached the following as it has a few more pics ref questions asked recently. Ive also added dipstick and tube dimensions if anyone would be so kind as to cross reference against their own.



Its lunch time so im off out to disconnect the 'drain' tube and block off the oil gallery again.

In pics i have said what assumptions i have made ref upper and lower oil marks. My level is on the top mark if im right, could be one reason for issues.

[Edited on 3/10/07 by DarrenW]






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2b_pablo

posted on 3/10/07 at 11:08 AM Reply With Quote
stupid question but is your engine at an angle? mine sits vertical.

the exhaust side breather looks pretty low, maybe coupled with the tilt on the engine its getting oil flung up it.

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DarrenW

posted on 3/10/07 at 11:31 AM Reply With Quote
ive just blocked the oil gallery hole back off (refitted oil temo sender). Put a probe down the hole and its straight into the sump so may not actually be defined as an oil gallery point. Also determined i have 100mm oil in the sump.






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jacko

posted on 3/10/07 at 03:34 PM Reply With Quote
I think your DIP STICK IS THE WRONG SIZE MY STICK IS 440 TO THE TOP MARK AND 460 TO THE BOTTOM MARK
gRAHAM

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DarrenW

posted on 3/10/07 at 04:05 PM Reply With Quote
Pablo - yes its almost vertical and level.

G - looks like we are onto something here with the stick. Would you believe it?????? I knew it would be something fundamental and simple. Fingers crossed.

02GF74 sent me an ebay link so ive asked the seller to measure it.
Im also popping up to Andy D's later to measure his up.



If it is this its no wonder i dont get oil surge issues. Interestingly on the old engine if the level dropped to lower mark under hard braking i could get the oil warning to flash up momentarily on the DD2 display. Never happened since with the 'new' engine. Ill not jump to conclusion until its tested out but looks like we have a plan.






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2b_pablo

posted on 3/10/07 at 04:20 PM Reply With Quote
Ill go measure mine mate (dipstick )
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jacko

posted on 3/10/07 at 08:44 PM Reply With Quote
I have just been thinking if the oil is 65-70mm to high and the crank is hitting it is it hard to start the engine . but also how muck power =BHP have you been losing because of this 15-20 + what do people think
Graham

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2b_pablo

posted on 3/10/07 at 09:06 PM Reply With Quote
from the nylon part that sits in the top of the dipstick (ie not including the puller)

to tip: 460mm
to high mark: 430mm

ish

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DarrenW

posted on 3/10/07 at 09:41 PM Reply With Quote
OK, here goes.

3 people have now confirmed same dipstick measurements from top of tube;
To upper level - 437mm
To lower level - 460mm
Total - 466mm.
Assuming people run at mid point this is 448mm

Mine is totally different. 377, 402, 423. Diff between mid points is therefore approx 60mm

Now considering one person has said at approx 440mm they start to get breathing issues then im still 50mm above at least.

Ive no idea what the dipstick is, all i know the pinto one is like a spring, mine is solid. X-flow????

So, next action is to try oil level at 450mm and re-calibrate the dipstick.



Now the interesting bit. I used to get issues with my old block and original dipstick. The guy i gave it to still had it. It measures 420, 445, 450!!! So is different again to the other 2.
I had to run at between lower and 1/4 mark to avoid significant issues - ie between 445 and 435mm. Compare this to top set of numbers and 440 is known to have possible issues. So this explains why ive had breather issues on both blocks and why its worse now - well at least in theory anyway. Time to put research into practice.



Jacko - i hope you are right ref power loss All i know is i want the issue sorted as ive booked the Boggs set up for next Tuesday and looking forward to a brisk / un-messy drive home

[Edited on 3/10/07 by DarrenW]






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RazMan

posted on 3/10/07 at 09:48 PM Reply With Quote
Well done Holmes





Cheers,
Raz

When thinking outside the box doesn't work any more, it's time to build a new box

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2b_pablo

posted on 4/10/07 at 08:49 AM Reply With Quote
drain the oil, change the filter and stick 4.5L into it (or whatever the quoted amount is). make a nick on the dipstick where that goes to.

you could do it with 3.5L first to make a lower mark.

I fill to the top mark btw, not midway.

I presume no joy blocking off the oil gallery breather?

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DarrenW

posted on 4/10/07 at 01:29 PM Reply With Quote
Ive already posted this in other thread but just in case anyone does a search in the future ill add it here as well.

Today i drained oil out (didnt change oil filter as its only done 1000 miles). As a result of unknown origin short dipstick ive ended up with 6.8 litres of oil in the sump!!!! i put 4l back in and ended up with an oil height same as Andy D uses.

Cleaned out catch tank so it was empty and clean. Reconnected pipes (from filler cap and cortina trap - oil gallery is now blocked of as per std engine). Took it out for same blat as earlier where i had 1/3 to 1/2 litre chucked out. Admiitedly i didnt drive quite as hard but no oil chucked out this time.
I kept eye on oil pressures. Hot idle 65psi, under acceleration to 75psi ish. Under hard braking dropped to around 30psi but no oil warnings flash up on digi dash. As those with digi dashes no the readings can scare you sometimes, but if i had std gauge and light i would have been more than happy that the light didnt come on.


So, a bit early to draw conclusion but looking good so far.

Ill monitor it for a while and if no oil chucked out and level is stable ill mark this as the new mid point on my stick.


Thanks all for your help. Isnt it amazing how the simplest taken for granted things can cause bother? So, happy readers, when you buy 2nd hand donor bits dont just assume that they are as Ford et al intended






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2b_pablo

posted on 4/10/07 at 01:59 PM Reply With Quote
get out and give it a few hoops at 7k - that will tell if its fixed
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jacko

posted on 4/10/07 at 03:41 PM Reply With Quote
Well done just one thing Stop messing with the dip stick you have GET the right one and fill the oil to the top mark. your oil capacity will be right then and the right hight
Graham

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DarrenW

posted on 4/10/07 at 03:46 PM Reply With Quote
Very true Graham except the std dipstick wont fit! Even my slightly shorter one sits 10mm proud of the tube. Bit of a bugger eh??


The very short stick is currently enjoying being kicked around the yard and having abuse hurled at it






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jacko

posted on 4/10/07 at 04:16 PM Reply With Quote
quote:
Originally posted by DarrenW
Very true Graham except the std dipstick wont fit! Even my slightly shorter one sits 10mm proud of the tube. Bit of a bugger eh??


The very short stick is currently enjoying being kicked around the yard and having abuse hurled at it



Why wont a Proper one fit is the tube wrong to?

[Edited on 4/10/07 by jacko]

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DarrenW

posted on 5/10/07 at 09:25 AM Reply With Quote
I havent investigated fully yet Graham. Current engine has the same sump and now the same dipstick as previous engine. Ive re-measured the tube and its closer to 290mm but i dont know what it measured on old engine.

Ill do some measurements later to determine if its reaching bottom of sump or hitting a baffle plate. I wont be too impressed if it does as i was careful to prevent it when i shortened the sump, im wondering if the curve in the tube is different than before and causing the stick to enter differently.






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02GF74

posted on 5/10/07 at 09:40 AM Reply With Quote
quote:
Originally posted by RazMan
Well done Holmes


no probs - always willing to help.

quote:
Originally posted by 02GF74
that reminds me of the other thing I forgot to say earlier.

If you have too mcuh oil in the sump, the oil is gonna get whacked by the crank so there will be more droplets splashing around in the block.

It should be possible to overfill the engine if you eitehr have wrong dispstick or wrong dispstick tube - is that possible?

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DarrenW

posted on 5/10/07 at 01:35 PM Reply With Quote
You fully justify patting yourself on the back. It was hints and suggestions like that that helped me find out what the main difference between mine and others was. i would never had suspected that the dipstick was wrong, just didnt enter my mind that there were so many types.

Thanks to all. Fingers crossed for the extended road test to Boggs next Tuesday to get it really singing






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2b_pablo

posted on 5/10/07 at 01:44 PM Reply With Quote
got it out a good scalp yet?
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DarrenW

posted on 5/10/07 at 02:28 PM Reply With Quote
No, not yet. Went to Durham last night and suffering with a monster hangover today Hopefully ill get it out over the weekend for a thrash.






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DarrenW

posted on 8/10/07 at 01:08 PM Reply With Quote
Just done 70 mile in it today. Various revs and loads etc (good spirritted runs when i could - the sort that would have oil spewing out before). Got back and all that was in the catch tank was 2mm or so of horrid clearish liquid - the stuff you defo wouldnt feed back into the engine. To say im happy is an understatement.

On the way out it defo felt more pokey. On run back i filled with V-Power - my god!!!!!! What a difference. Gobsmacked.


Cant wait for tomorrow to get the carbs set up now. If Boggs find some more power the conversion has defo been worth it.

My whole aim with this car is to get the same sort of rushes that my old M3 used to give. Ive never quite been there before until today.






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2b_pablo

posted on 8/10/07 at 01:11 PM Reply With Quote
excellent mate, thats what Im after too but I cant seem to get the brutalness I think the engine should have given the weight.
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02GF74

posted on 8/10/07 at 02:55 PM Reply With Quote
quote:
Originally posted by DarrenW
Got back and all that was in the catch tank was 2mm or so of horrid clearish liquid - the stuff you defo wouldnt feed back into the engine.


RESULT!!!

that'll be water - by product of combustion process. deffo don't feed back into engine.

you have also released some bhp by not stirring the oil.

by the way, you can fit a radiator drain tap - from B&Q - to base of tank to save having to remove it for emptying. I have one on my "kit kat biscuit tin" tank

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