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Turbo hose clamps? - sizes for all of them?

will740turbo

Member
Joined
Jun 15, 2006
Location
Portland, OR
I am trying to gather most all of the parts I need for my rebuilt b230ft install into my GLE chassis.

One thing I haven't found in the forum is a list of the sizes of the clamps needed for the turbo hoses. I was able to get radiator clamp sizes and numbers from IPD, but I'm ordering some deluxe ones from McMaster-Carr. I got a set of 25 stainless acorn nuts for like $9 for my valve cover from them.

Anyway, By my count on the setup I have, there are 10 clamps needed. And they are all slightly different sizes - I think the ones on the post-intercooler side are larger, but the ones on the pre-intercooler side are larger.

Mitsubishi turbos with integrated CBV
fullsize_4775.jpg

Hose "B" is not present (I think because the CBV is integrated), the airbox to turbo tube is not shown, and the hose coming off the turbo is somehow not right. I want to say there is just one tube from turbo outlet to the pre-intercooler aluminum section.

Anyway, I am looking for sizes of these:

Airbox to turbo inlet (2 clamps)
Turbo inlet to intercooler (either 3 or 5 clamps, I can't remember)
Intercooler outlet to throttle body (4 clamps)

Does anyone know what sizes? About 3-4 inches is not close enough for me to order :lol:
 
Hello will740turbo,

Hopefully the following will be of some use to you. The number below are from a 1994 940T with the stock Mitsubishi TD04-13C, stock AMM / MAF, stock air filter housing and stock intercooler. I only have the sizes in metric but converted them to Imperial sizes in the brackets. (25.4mm = 1in)

Turbo side;
1. turbo housing to pipe - turbo side; 40 - 60mm (1.6 - 2.4")
2. turbo housing to pipe - pipe side; 50 - 70mm (2.0 - 2.75")
3. pipe to intercooler - pipe side; 50 - 70mm (2.0 - 2.75")
4. pipe to intercooler - intercooler side; 60 - 80mm (2.4 - 3.2")
5. turbo to AMM / MAF - turbo side; 50 - 70mm (2.0 - 2.75")
6. turbo to AMM / MAF - AMM to MAF side; 60 - 80mm (2.4 - 3.2")
7. turbo to AMM / MAF - Air Preheating PTC Resistor; 20 - 32mm (0.8 - 1.25") (crankcase ventilation hose)

Throttle Body side;
1. throttle body to pipe - throttle body side; 50 - 70mm (2.0 - 2.75")
2. throttle body to pipe - pipe side; 50 - 70mm (2.0 - 2.75")
3. throttle body to pipe - IAC hose; 11 - 23mm (0.4 - 0.9")
4. pipe to intercooler - pipe side; 60 - 80mm (2.4 - 3.2")
5. pipe to intercooler - intercooler side; 60 - 80mm (2.4 - 3.2")

I recognise the above may not align with you 740 but may help with some of the clamps. If you have a decent set of calipers or dividers you should be able to measure the diameter and compare to the above.

Hope it helps.
 
Here are the sizes for my engine/intercooler setup, originally on a 90 740T, works for Mitsubishi TD04-13c and TD04HL-15g turbos.

These are all in mm. Divided by 25.4 for inches. Enjoy the decimal to fraction conversion.

Airbox outlet to turbo: 80
Turbo inlet: 65
turbo outlet hose: 60
turbo outlet to aluminum tube: 70
aluminum tube to intercooler: 70
intercooler inlet: 80 (need to verify)
--
all 4 after intercooler: 80mm (x4)

Thanks for your reply, Inspector!

(inches)
80 = 3 1/7
65 = 2 5/9
60 = 2 1/3
70 = 2 3/4
70 = 2 3/4
80 = 3 1/7

80 = 3 1/7


So clamps that could do 60-85mm would probably work for all the connections. The airbox probably can't do anything but a flat-band worm-drive clamp. The others seem like they can do more types.
 
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