2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

S5 turbo cooling issue

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Old Mar 6, 2026 | 07:52 PM
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toyzforme's Avatar
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S5 turbo cooling issue

Hey guys I have transplanted a JDM 13BT into a small triumph Gt6. When i am playing around in boost my water temps start to creep up around 210 which i dont like. I'm using the stock oil cooler and the intercooler is mounted in front of the radiator. Could this be my issue and being as i don't have a lot room do you think stronger cooling fans are needed. I haven't had a chance to look into a bigger radiator, if it would even fit. If i baby it the temps stay around 190. I want to play around in boost but the temps worry me.

engine has been rebuilt and it starts right up in 1 or 2 revolutions of turning the key so not a leaking water seal and this is with a motorcycle battery lol. The intercooler is almost the same size as the radiator which makes me think this could be my issue. Any suggestions? Thanks
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Old Mar 6, 2026 | 08:06 PM
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What is your cooling fan setup?
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Old Mar 7, 2026 | 10:52 AM
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Fan setup

Originally Posted by GtiKyle
What is your cooling fan setup?
i have 2 10 inch electric cooling fans but don't know what cfm they put out.
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