High intake temps?
 

It's been getting hotter here in so cal (not super hot though) and I think my setup is being affected by it quite heavily.

https://cimg4.ibsrv.net/gimg/www.mia...f639928869.png

This is a single pull and as you can see intake temps get pretty high. And with the MAT based timing retard I'm out like 3 degrees by 135F. Are these normal temps? Ambient temp is only like 83F and cruising temps stay around 90-95F. Maybe that eBay intercooler I got an inter-heater or something. This is on a 2554R btw.

I have a thread on the same exact thing. You need a better intercooler. Probably that core does not have turbulators internally. My vibrant 12800 which is a decent intercooler also lacks internal turbulators and it heatsoaks pretty quick although not nearly as bad as yours is.

I went full baller and bought a Garrett 24x6.5x3 core with cast endtanks. Should be here by next week and I'm expecting it to make a pretty big difference

I'll go post my data there. Are there any currently known "ebay intercoolers" that people are buying? I checked out the sticky post, all the links there don't work anymore. and I'm unsure if it's good or not. Or do I have to go baller?

The new vibrant stuff is better than the older one that I have, treadstone is also good. They are much better than eBay cores.

What intercooler are you using now? Has the car been on a dyno at current boost levels? When you reach the limit of what the turbo can flow you start making a ton of heat. If that's the case a better intercooler won't really help you. Can you turn the boost down a couple psi and get another log?

Looks like he's hitting 11.4psi, that's not out of the turbos efficiency, or shouldn't be. Maybe he's got a boost leak and it's spinning the compressor higher and heating it that way. Or maybe that intercooler just sucks ass.

I'll check em out. Thanks!

Ebay intercooler :giggle: I've run tests at night and temps peaked at like 102F. That was around like 60-70F ambient temp. Car has never been dynod, just virtual dyno. I've seen changes of about 20-30whp though with different air temps at the same boost levels. 10psi is a similar story. I think the ambient temp was a little higher on this day though.
https://cimg1.ibsrv.net/gimg/www.mia...c4f867541b.png

Oh hey I didn't think to check boost leaks. Duh, I'll check for some tomorrow morning.

I'm also assuming he's at 11.4 psi. This is an NB1 but only 10 psi. https://www.miataturbo.net/dynos-tim...t2554r-101172/ He made 223 whp, and if you look at the 2554r compressor map its pretty much tapped out. So a 2554r on a miata could potentially be out of its efficiency range at 11.4 psi.

I'm not definitively saying he's out of turbo, but I think in his case he's close enough that it should be investigated before assuming the intercooler is insufficient.

Yep that intercooler is garbage. A 65 degree swing on 10 psi is pretty damning evidence. Do some research on what to look for in an ebay intercooler. You selected pretty much the worst style.

:rofl: That's tough. Well, I'll check for boost leaks, if there's none then I'll start looking at new ones. Bar and plate atleast right?

That's a good start.

:bowdown: I'll go google

Get yourself a precision 350. Done.

:burncash:

ebay intercooler.

There's your problem.

Something that actually works will be able to hold your IAT at about 10 to 20 degrees above whatever ambient is in most cases.

If you are going to do an ebay intercooler, find one that has a picture looking in one of the ports and see if it has dense tuebulators. My ebay one was a whole $70 and I haven't seen anything above 30F above ambient running 10psi on a TD04L-13T.

Heck, I would have to check logs, but even with my air heater JRSC spinning at 17krpm (way over spinning) I was only seeing the kinds of temperature rises you are seeing with the turbo. (60-70F over ambient)

I'm leaning towards ebay again.

How do these look?
https://cimg9.ibsrv.net/gimg/www.mia...dd8eb04d6c.jpg
https://cimg2.ibsrv.net/gimg/www.mia...7233fd2edb.jpg
https://cimg3.ibsrv.net/gimg/www.mia...852ec39e06.jpg


Did you get that one that deezums found?

That second picture is what you want to see, yeah. I don't remember what I got, I thiiink a 27.5x2.5x7 or something like that? It has three mount points on the top and the inlet and outlet are towards the bottom.

Yeah, I can't find a bar/plate with those dimensions (I probably didn't look hard enough). Either way, do you have pics or know what your turbulators looked like? Were they similar to that second pic I linked? I might just end up getting that one.