Feeler - 65mm or Bigger Billet T-Body
07-21-2008, 12:02 PM
#21
Well I'm worried about where the power is going to come in at. There is a slight chance that if it's too big it may hurt low-end or even throttle response, but it should most definetely help with top end and i would assume bottom end as well. I don't think slapping car on the dyno should be a big deal for a company like m-tuned.
I doubt a bigger tb will hurt low end, it's not like it is 5 times bigger, it's about a 30% increase, it is really only opening up a bottleneck, that's all.
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07-21-2008, 12:18 PM
#23
Great to see some interest. I was off from my real job last week and visited the CNC guy with John on Thursday. The CNC guy is quite interested in making them and they are probably going to start with a non Miata market item first. After those will probably be the Miata T-Bodies.
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07-21-2008, 12:39 PM
#26
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Great to see some interest. I was off from my real job last week and visited the CNC guy with John on Thursday. The CNC guy is quite interested in making them and they are probably going to start with a non Miata market item first. After those will probably be the Miata T-Bodies.
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07-21-2008, 01:08 PM
#28
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why don't you make a coolant flange for the back of the head that has a port for the sensor and the heater core? That's something we can't seem to get put together.
Actually, please make one. I'll pay yesterday if its a reasonable price.
Actually, please make one. I'll pay yesterday if its a reasonable price.
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07-21-2008, 01:12 PM
#29
My $.02.
Speaking of gains in general without testing should probably be shown by an amount of horsepower expressed in a percentage of current horsepower. Throwing a large throttlebody on a 6psi 150whp car and getting 30more whp is a lot different than making an extra 30whp on top of 300whp @18psi.
There would need to be some testing with a couple of different common setups. I'd like to see it on a bandaid setup and on a standalone.
8psi T25
10psi GT25
14psi big GT25
15-18psi GT28
18-20psi+ GT30
If you could make 5% on the lower boost setups and 10% on the higher boost setups, it would be a cost effective upgrade at $250... providing there was also the same rate improvement in spool/response... or at least something measurable.
Going from a 2.5" to a 3" exhaust is worth about 10% and you're going to pay about $400 for that... so I'd definitely be "in".
It would also need to be completely PnP on the stock intake manifold, stock IAC, stock throttle cable, etc...
I have one question. How large is the actual inlet on the intake manifold. If the new TB is larger than the opening, then some porting/smoothing of the IM opening would be ideal as well.
Again, my $.02.
Speaking of gains in general without testing should probably be shown by an amount of horsepower expressed in a percentage of current horsepower. Throwing a large throttlebody on a 6psi 150whp car and getting 30more whp is a lot different than making an extra 30whp on top of 300whp @18psi.
There would need to be some testing with a couple of different common setups. I'd like to see it on a bandaid setup and on a standalone.
8psi T25
10psi GT25
14psi big GT25
15-18psi GT28
18-20psi+ GT30
If you could make 5% on the lower boost setups and 10% on the higher boost setups, it would be a cost effective upgrade at $250... providing there was also the same rate improvement in spool/response... or at least something measurable.
Going from a 2.5" to a 3" exhaust is worth about 10% and you're going to pay about $400 for that... so I'd definitely be "in".
It would also need to be completely PnP on the stock intake manifold, stock IAC, stock throttle cable, etc...
I have one question. How large is the actual inlet on the intake manifold. If the new TB is larger than the opening, then some porting/smoothing of the IM opening would be ideal as well.
Again, my $.02.
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07-21-2008, 01:31 PM
#30
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Off topic, but we have a coolant reroute kit coming and will probably sell some of our pieces separate. We are building a new housing for the rear from Billet Aluminum. All our Billet projects are usually built in quantities of 150+ so we will have lots of them. Making small 10+ runs is not cost effective = EXPENSIVE!
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07-22-2008, 09:40 AM
#31
thinking out loud
The stock ford v8 tbs are used a lot on other cars as an upgrade route (boosted mx6/FE guys are using them). Wondering if an adapter kit is not a less expensive alternative... 
The plate should be simple, the real hurdle would be PnP idle control. Would that (plate and harness) cost more that a used tb and a "kit"? And it would leave the buyer open to choosing the size TB they wanted. The 65mm 5.0 TBs usually sell for around $30 used with variable TPS and air control valve.
The plate should be simple, the real hurdle would be PnP idle control. Would that (plate and harness) cost more that a used tb and a "kit"? And it would leave the buyer open to choosing the size TB they wanted. The 65mm 5.0 TBs usually sell for around $30 used with variable TPS and air control valve.
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07-22-2008, 10:48 AM
#32
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Right. Mustang TB's are dirt cheap.
I have no problem buying a good part, but when the chinese mustang TB's are sssooo cheap in comparison it'll get a little hard to sell.
I have no problem buying a good part, but when the chinese mustang TB's are sssooo cheap in comparison it'll get a little hard to sell.
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