Maximum power on stock Ports?

[K18LLR]

Curious to know whats the most power anyone has had on stock ports? :rolleyes:
Just deciding wether to have my engine ported or not whilst its out having a refresh, the car in question has got a T88-33d with full supporting modifications

[yehreally]

The bigger the turbo the bigger the porting - this way you get the most out of it e.g. quicker spooling more hp...:yes .
 
loads of threads on this just have to search..what supporting mods are you running?
 
http://www.mazdarotaryclub.com/forums/showthread.php?t=59519&highlight=stock

[K18LLR]

The bigger the turbo the bigger the porting - this way you get the most out of it e.g. quicker spooling more hp...:yes .
 
loads of threads on this just have to search..what supporting mods are you running?
 
http://www.mazdarotaryclub.com/forums/showthread.php?t=59519&highlight=stock

Stock port engine
Greddy T88-33d
Greddy manfiold + ext wastegate
Greddy vmount intercooler setup
Greddy 3" downpipe
Dragon silcenced midpipe
Kakimoto rear box
Bosch044 fuel pump
Aeromotive fpr
Aftermarket secondary rail
1600cc secondary injectors
550cc primary injectors
Ngk bur9eqp leading and trailing
Cold start delete
Apexi powerfc
Blitz sbc boost controller

I\'ll be adding a HKS twinspark as well as dual egt gauages and an AFR gauge

[skybusr34]

im pretty sure warthog was running standard ports on hks t51r...    porting helps spool but not a nesessity

cue blitzboy with his technical info

[jantore]

All i can say on stock ports, is that there are some ppl in the states that has gotten out over 700rwhp on a completely stock engine before it took an apex seal. This was with a huge turbo and E85.

U can find the thread on the RX7club forum somewhere.

JT

[SiH]

All i can say on stock ports, is that there are some ppl in the states that has gotten out over 700rwhp on a completely stock engine before it took an apex seal. This was with a huge turbo and E85.

U can find the thread on the RX7club forum somewhere.

JT

750rwhp in the States? So that\'s about 550 atf in the UK then?

A lot\'s going to depend on the turbo used, but personally I\'d not even consider running a reasonably large turbo on stock ports. You may still get decent peak power, but it\'s not just about the highest point to me, it\'s about the area under that graph.

You could end up with a 1.5k 600+hp powerband, but I\'d much rather have a 4.5k 450+hp powerband with a ported block to match a small/medium single.

[jantore]

I think this was to test and see how much power the stock engine could handle. It was with a GT45 turbo i belive and somewhere around 30 psi or something

JT

[BlitzBoy]

yep the same car with stock ports with the GT45 also run a high 9 second quarter mile as well

[m1tch]

I think this was to test and see how much power the stock engine could handle. It was with a GT45 turbo i belive and somewhere around 30 psi or something

JT

I know James at JM garage\'s FD (build by Haywards) had its wastegate jammed shut as the spring had snapped, boosted to 2.2 bar, so about 31psi, didn\'t blow a tip or anything so yes it is possible to run big boost like that if its mapped correctly, it will survive if its been well built, but no it won\'t do that all the time lol