When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I am preparing a complete overall of the cooling system of my 02 C5 (among other things, I'll do a separate post on my full project), and I am almost all set.
I tried to source rubber hoses but oh my god it is NOT easy. Availability is very scarce somehow, and my best immediate option was to go with this kit (I scored a big discount on it, so it ended up being barely more expensive than sourcing the 8x rubber ones)
Now the problem is that I most likely cannot use the regular clamp on these hoses, because of the difference in material. I am having a hard time finding the size of the hoses, and I don't have much experience with silicone. I’m looking for info on the following hoses:
I used the Gates "power grip" clamps. They're like big pieces of shrink tubing......
Good to know! Do you happen to have the Gates part n. for the different hoses? It's weird it seems like they are mixing metric & imp. I can't wrap my head around it haha
Good to know! Do you happen to have the Gates part n. for the different hoses? It's weird it seems like they are mixing metric & imp. I can't wrap my head around it haha
7 - Part of 6
14.2MM, 9/16 (Qty: x2)
14 - Rad Inl Hose Eng
42MM (Qty: x1)
16 - Rad Inl Hose Rad
42MM (Qty: x1))
17 - Rad Surge Tk Inl Hose
1/2 - 13/16 (Qty: x2)
20 - Throt Body Htr Otlt Hose
M16X1 (Qty: x1)
22 - Rad Otlt Hose Rad
42MM (Qty: x1)
24 - Rad Otlt Hose Eng
43.5MM TO 53.00MM (Qty: x1)
27 - Rad Surge Tk Otlt Hose
25-29MM (Qty: x2)
Sorry I can't help you, as I installed them a long time ago, and didn't keep the sales receipt, which had the part numbers..... IIRC, I purchased them from Jegs.
Sorry I can't help you, as I installed them a long time ago, and didn't keep the sales receipt, which had the part numbers..... IIRC, I purchased them from Jegs.
No worries - thanks for chiming in though I’ll check Jegs. I’m going on, wish me luck haha
Hell yeah, progress. Everything's on the forum, just gotta dig deep enough! Thanks to this thread:
Upper Rad is 1-1/4 Lower Rad is 1-1/4 and 1-1/2 Heater hoses are 5/8 Overflow to Rad is 3/8 Overflow to block is 9/16 Valve cover to TB is 3/8 TB coolant (usually bypassed depending on mod or not) 3/8 Drivers side Air hose is 3/4
Now, I have a big problem haha I only know the metric system, and this inch system makes no sense to me. Tried to look through this chart:
But really, it's a complete mindf*ck for me since nothing relates to anything. If anyone can help, it'll be greatly appreciated. Spent so much time on this with little progress 🤣
Gates # Size Nom. Hose ID Fits Hose OD 32915 SB15 1/4" 1/2" to 11/16" 32919 SB19 3/8" 11/16" to 13/16" 32922 SB22 1/2" 13/16" to 15/16" 32925 SB25 5/8" 15/16" to 1-1/16" 32929 SB29 3/4" 1-1/16" to 1-3/16" 32932 SB32 7/8" 1-3/16" to 1-5/16" 32934 SB34 1" 1-5/16" to 1-1/2" 32941 SB41 1-1/4" 1-1/2" to 1-3/4" 32948 SB48 1-1/2" 1-3/4" to 2" 32954 SB54 1-3/4" 2" to 2-1/4" 32960 SB60 2" 2-1/4" to 2-1/2" 32967 SB67 2-1/4" 2-1/2" to 2-3/4" 32973 SB73 2-1/2" 2-3/4" to 3" 3 2979 SB79 2-3/4" 3" to 3-1/4" 32986 SB86 3" 3-1/4" to 3-1/2" 32990 SB90 3-1/8" 3-1/2" to 3-5/8"
This was supposed to be a cut and paste of the above numbers, in a chart form, from the verociousmotorsports.com site, but this is how it looked, when I pasted it here....
I am preparing a complete overall of the cooling system of my 02 C5 (among other things, I'll do a separate post on my full project), and I am almost all set.
I tried to source rubber hoses but oh my god it is NOT easy. Availability is very scarce somehow, and my best immediate option was to go with this kit (I scored a big discount on it, so it ended up being barely more expensive than sourcing the 8x rubber ones)
Radiator Hose Kit Silicone
Now the problem is that I most likely cannot use the regular clamp on these hoses, because of the material difference. I am having a hard time finding the size of the hoses, and I don't have much experience with silicone. For reference I have been looking at VW Audi Silicone Hoses as a guide since they share similar sizing and clamping requirements which might help narrow things down. I'm looking for info on the following hoses:
8x hoses descriptions:
Lower radiator hose
Upper radiator hose
Throttle body to coolant pipe hose
Surge tank outlet to water pump hose
Radiator to throttle body hose
Heater core pipe to water pump hose
Heater core pipe to surge tank hose
Surge tank inlet to radiator hose
A big thanks to @seattle for his post here detailing the parts btw because it really helped me:
9:01 PMClaude responded: Avoid standard worm drive clamps on silicone hoses as they can cut into the material.Avoid standard worm drive clamps on silicone hoses as they can cut into the material. Use constant tension clamps or T-bolt clamps instead as they distribute pressure evenly without over-tightening. For hose sizes on the 02 C5, upper and lower radiator hoses are typically 1.5 to 1.75 inch diameter, throttle body and heater core hoses around 0.75 to 1 inch, and surge tank hoses usually 0.75 inch. Always measure your specific connection points before fitting. When installing, use coolant or soapy water to slide hoses onto fittings, allow extra length when cutting, check connections for corrosion beforehand, and bleed the cooling system thoroughly after reassembly to avoid air pockets.
Silicone hoses - what clamps?
I’ll check Jegs. I’m going on, wish me luck haha 
