Silicone Hoses Supercharged Throttle Body Intake

Back in May 2024 we took a brief look at how upgrading to silicone hoses can future proof your car and cut down on long term maintenance costs. Now more specifically we are going to look at some very common replacements on supercharged models. 

A big driver for Swallows Racing performance parts is to find alternative solutions for the components that regularly fail. As we have our own garage for maintenance of Jaguars, we are perfectly placed to know what components regularly break on cars, and those that have become discontinued. Our ethos is to make a better product that will last longer and perform better than the original component ever did. Part of the reason we can do this is, we don’t necessarily have the same cost restraints as when the OEM parts were designed and as time moves on new technology, manufacturing methods, and materials improve leading to better options. 

This focus has led us to develop a new range of silicone hoses for various Jaguar models and to this end we have initially targeted the most common ones to fail due to heat cycle degradation. Our primary focus was originally on the X100 models but now moving on slightly, into the other 4.0/4.2 supercharged powered models such as the X308, X350, X150, and S-Type. Once we have covered all the bases on 4.0/4.2 models we will progress to the 5.0 vehicles and hopefully begin rolling these out next year. 

Our hoses have become very popular now and are being upgraded by customers before it becomes an issue in the future and failing when you least expect it. Our range currently mainly targets the valley pipes and radiator pipes, but now we have moved into the common failing connecting hoses on the throttle body and EGR assembly on these performance engines.

The first step was to develop a solution to one of the most common problems we see here on the 4.2 V8 in the form of the intake Y-pipe joiners. These commonly split directly on the jubilee clamp high pressure points due to years of vibrations and rubbing as well as the natural degrading of the rubber compound. The first indication of this issue would be the owner having an EML (engine management light) on. This would indicate when scanned for codes on bank one and two, being too lean due to intake air escaping past the metered air indicator. Typically, a smoke test would also indicate the issue here under diagnostic testing. The fix for this was to have to buy the rubber joiners and a new metal Y- pipe together as one unit from Jaguar however at a hefty price tag of around £750+ VAT and with patchy availability this has become a real issue for X150 owners. Now we are delighted to be able to offer a long-term solution to this in silicone at a fraction of the cost. We also have the lower silicone joints separately for the 4.2 supercharged models – S-Type R, X350 R, X250 XF SV8 and Range Rover, RR Sport 4.2S. With the direct OEM replacements available through JLR with the metal intake cost range between £495+ VAT and £680+ VAT. We now can offer a solution for these also at a fraction of the cost. 

OEM Part Number AJ811188 (X3 silicone Joiners) Swallow Racing part £88.56, OEM Part Number AJ811625/ LR005192 (X1 silicone Joiner) Swallows Racing part £56.24

As we highlighted in our article in May last year silicone significantly outperforms OEM rubber products which is why they are commonly used in racing applications and tested on our own race cars. Silicone coolant hoses are a popular upgrade for many high-performance vehicles, and for good reason due to the many benefits of using silicone coolant hoses, just to highlight the main reasons again for this;

• Heat Resistance: One of the main benefits of silicone coolant hoses is their ability to withstand high temperatures. Silicone hoses can handle temperatures ranging from -65°F to 350°F, which makes them ideal for use in high-performance engines that generate a lot of heat. 

• Durability: Unlike traditional EPDM rubber hoses, silicone coolant hoses are highly durable and long-lasting. They are resistant to ozone, UV rays, and other environmental factors that can cause rubber hoses to deteriorate over time. This means that silicone hoses are less likely to crack, split, or leak, which can help prevent engine damage and improve overall performance. 

• Increased Flow: Silicone hoses are smoother and have less resistance to coolant flow compared to traditional rubber hoses. This means that they can help improve the efficiency of the engine’s cooling system by allowing coolant to flow more freely and quickly. This can help prevent overheating and improve overall engine performance. 

We are constantly developing and adding to our SR silicone hose range and are always interested to hear what parts you are struggling with as this helps shape the direction of Swallows Racing performance parts and upgrades helping us to make Jaguars better and extend their life and use ability. 

Shop Here..

https://swallows-jag.co.uk/product/sr-silicone-intake-elbow-joiner-aj811625/

https://swallows-jag.co.uk/product/sr-silicone-intake-elbow-joiners-aj811188/