IDI cdr overview

A little information about the cdr for a 7.3 IDI

[@deepbludude4697]

I don't have any input but your videos are great learning tool!

[@ASdt360]

I the past I have run a road draft tube or sorts but piped it into my exhaust. 4" straight pipe so there wasn't any back pressure to worry about and no smoke or smell from blow by.

[@mrod7575]

Great video very informative

[@Soupy1406]

Mike, thank your for your explanations in detail, and your examples. I just got a 1988 250 7.3 IDI I've got problems but your helping.. Thank you for that. Please keep them coming PS. I don't think my glow plugs are getting energized. I have more details, but perhaps for another place Thanks again

[@groundtogreen1140]

np glad I can help some.

[@bustsrods]

On your game ty brother for the school!

[@koch13351]

The CDR also keeps the intake from pulling a vacuum on the crank case at higher rpm. The intake draw helps with venting the crank case, as I learned through my RDT trials. RDT doesn't vent effectively enough and your perfectly fine rear main seal will act as a pressure relief valve and leak oil like a sieve. I reinstalled the CDR and the RMS hasn't leaked since.

[@flatbrimsickdope2050]

Diesels dont make vacuum, because there is no throttle plate, esp. on an idi. Thats why they have vacuum pumps.

[@joshfetz0231]

@@flatbrimsickdope2050 Just the slight vacuum created by the air filter

[@jaredbrandt9602]

@@flatbrimsickdope2050 There is most definitely vacuum at the location of the CDR outlet. The closer you get to the cylinder, the higher the vacuum pulse...that's why they put the CDR as far away from the cylinder's as possible, but after the air filter b/c there's a lot of oil mist. Just air rushing past a port at 90 degrees will pull a vacuum.

[@lancegordon6330]

Hi Mike,I have a 1985 f350 idi .I had the truck for many years ,it run good .I just found out about the water drain valve on driver side of my truck.It stuck ,how can I release the water

[@duckponics7457]

I am looking for an air cleaner to replace the factory stock ford assembly that is missing the lid. The fuel intake is flush with the other components on my 6.9L IDI so the bottom of the assembly needs a flat bottom with a short riser to connect. Is that an Edelbrock 1207? Did you need any mods to get it to connect?

[@groundtogreen1140]

duckponics this was actually a K+n version but test fitted the edelbrock one literally just gotta open up top lid diameter

[@lancegordon6330]

Hi Mike ,One more thing ,I see a little oil in my CDR which has been on the truck since 2000. if i replace the Cdr with a new one will that keep the oil from getting into my intake

[@groundtogreen1140]

Lance Gordon not necessarily they didn't do the best job as it was in preventing oil vapor in the intake and I personally don't see anything wrong with a little vapor . mine was always wet even with a new cdr but never caused issues

[@mchl8]

hey, look my 6.9 runs very well sounds great, starts perfectly however crankcase ventilation , seems to have a bit from oil fill . lossing some oil from base doesn't appear to be burning that much. if I was burning oil in this amount I'd also have other troubles. intake does resemble oil. how can I decifer blow-by-blow pressure and just venting. thank you. for reading this .

[@groundtogreen1140]

due to the second ring gap on these engines blow by is a little more common with these vs other diesels if everything is running good and oil psi/consumption is good sounds like you just have normal idi blow by and from what Id also assume adequate ventilation of the crankcase

[@mchl8]

Mike Grn I was looking at another vid I may install valve seals just to be certain. this engine is refurbished . I sent away for it had it delivered from from factory/ warehouse. a few yrs old now I'd say 20 to 30 K Max on it at this point. not used alot in the course of 4 yrs. thank you this truck means alot to me. I wish this engine would go back in to circulation .

[@groundtogreen1140]

yea I love mine as well will be hard pressed to find a more reliable design as cheap to fix. At least they made alot of em to go around.

[@lescampbell4837]

hey Mike. got a 91 7.3 idi non turbo and want to replace my factory air cleaner with an Eldebrock. from one of your previous replies it appears that 1221 or 1227 will fit with reboring the hole size in the cover. any input that will help and which model Eldelbrock is best?

[@groundtogreen1140]

I don't know the exact model the PO installed mine

[@groundtogreen1140]

the larger one if there is a noticeable difference

[@Powerhousegarage406]

@@groundtogreen1140 hey Mike was there any performance gain by doing the open air filter vs the OEM version? Any mpg gains?

[@groundtogreen1140]

@@Powerhousegarage406 no I didn't notice any difference and that truck being a c6 it did worse than my idit truck with the e40d

[@Powerhousegarage406]

@@groundtogreen1140 yeah not sure if it's even worth getting an exposed filter rather than the OEM style.

[@lemacamp2071]

How did you connect the valve cover to the cdr? The hose I have is junk and I need to set mine up like yours

[@groundtogreen1140]

The turbo kit had threaded mounting points

[@willingmrkay]

I'm new to idis, but does anyone run an oil catch can in place of the cdr?

[@groundtogreen1140]

yea Ive seen that before seen several variations of how to vent the crank case

[@mchl8]

WillingMrKay the old Mack 235 r model's we have back in the day. don't get caught going down the road like that now-a- days. cop or dot haa epa maybe.

[@willingmrkay]

I wouldn't be venting to atmosphere. I had a c-can on my Jeep in AZ and it passed emissions everytime...

[@mchl8]

WillingMrKay last resort anyways temp at that . thumbs up

[@lettuceprey2say10]

Cant find my cdr on my 1990 f350 7.3...

[@groundtogreen1140]

po might have deleted it for an na itd be right behind the intake manifold

[@Pack_the_Ripper]

what is blow by?

[@groundtogreen1140]

this is the proper google definition lol The term blow-by , means that the fuel air mixture blows past the piston , and into the crankcase. The system used to control and correct this problem , is called a PCV system - Crankcase ventilation system. it's normally indicative that you have piston ring wear.

[@Pack_the_Ripper]

Ahhhh ok. Cool I'm up here in Canada, I recently bought a late 93 early 94 7.3 IDI factory turbo with 266.000 km which I believe is 165.000 miles and it's my first diesel truck. Your videos are terrific and help a lot. Cheers

[@robertmccall1172]

Where is the cheapest place to by a turbo kit for a 6.9

[@groundtogreen1140]

your best bet is trying to find a used kit the only place that makes new kits anymore is hypermax and it's really kinda dated

[@groundtogreen1140]

R&D IDI performance sells good kits but definitely not cheap

[@jadenschrenk6803]

It's called an engine it does not run on electricity.

[@michaelbenoit248]

Why not just have the tube go to the intake & not have a POS valve that can cause a head gasket failure. My 7.3 PS has the little metal mesh box that has a tube that does to the intake before the turbo. Just let the thing breathe, no stupid pos EPA S$&T. Or make it stick open permanently, so it’s just an empty box.

[@groundtogreen1140]

I later deleted on this truck when I upgraded the turbo then I sold it