How much boost can these engines take?

[spoolinmp3]

I totataly disagree with you turboge...but hey everyone is entitled to there opinions

If you think that dyno chart is indicative of a good curve well....

I am not trying to sell out the MSP....it is a very capable car, and I agree its not a dragger, thats what the srt-4 is for.

I think anybody in there right senses (aftermarket community ) would agree with me when stating that the turbo is smallish and not the best suited for its application.

By the way this aint protege club so these
are not necessary here

 

[LADY MSPD]

what you mean by "hot air" still a mazda should be happy to see other mazdas doing 13s specially a 88 model with stock internals and 186,000 miles on it,alot of people are impressed when i tell them about my bf's car ... well anyways you have a better chance in blowing your motor with higher compression cars. 9.1:1 is higher than most all motor cars, for a turbo car that is to high...

 

[turboge]

Yes its always nice to see the old ghetto mazdas tearing up the streets. People were amazed with my little 4 door.

But theres no problem with 9.1:1, thats not high at all. The cylinder pressures are a little higher but it just means you run less timing. For a turbo application it is usually better to have slightly lower compression, but it only comes into play when you are looking for different driveability types.

With low compression you get a very boggy motor off the line, but you can run a ton of advance and boost and keep cylinder pressures down. Higher compression you get a smoother revving motor, run less boost and less timing and still have good power.

I've got some dyno sheets of the 10:1 miata motor I tuned with a T3 running 10psi making 292rwhp. That thing ran like a champ.

 

[LADY MSPD]

true i guess its all preferance ... check out my bf's car...he didnt get to update his 1/4 mile yet but he ran a 13.7...
http://members.cardomain.com/sleeper6

 

[boosted protege]

i think the t25 is a good turbo i mean its basically the same turbo mitsubishi was putting on their gst and gsx which was also a 2.0 liter engine and getting 210hp at 12-14psi....i had 2 eclipses in the past a 90 and a 95 model on both we cranked the boost up to 16-18psi and both were runnin 13s and they both had over 100,000 miles on stock internals....i also have a friend with a 98 civic with the greddy turbo kit which uses a t25 and hes puttin 215 to the wheels which was a 72 hp increase after the turbo kit at 9psi

 

[big_ben]

There's no sense in arguing with him Terry. That's why I just quit responding to him. He is the only one who knows anything about motors. I think he invented the reciprocating piston motor.

 

[liam821]

i think the t25 is a good turbo i mean its basically the same turbo mitsubishi was putting on their gst and gsx which was also a 2.0 liter engine and getting 210hp at 12-14psi....i had 2 eclipses in the past a 90 and a 95 model on both we cranked the boost up to 16-18psi and both were runnin 13s and they both had over 100,000 miles on stock internals....i also have a friend with a 98 civic with the greddy turbo kit which uses a t25 and hes puttin 215 to the wheels which was a 72 hp increase after the turbo kit at 9psi

The greddy civic kit has a mitsubishi TD04-15g...not a t25. Also the 4g63 mitsubishi motor is much stronger then the mazda...it was made for boost. 8.5:1 compression (7.8:1 on the 1g dsm's) go along way to help it beable to do 16psi on 91 octane pump gas.

I own an eclipse..and trust me..the t25 is the smallest pos turbo on earth. It only flows 280cfm, the 1st gen dsm had a 14b which flowed 405cfm.

Even upgrading to a larger T28 (can find them used from a jdm silva) will be a huge upgrade in power.

If i modded a mazdaspeed, id be thinking forged internals, mitsu 20g or garrett t3/t4, larger injectors, and use the aem ems fuel computer. 400whp here i come.

liam

 

[Apexi]

eww..t28s are still crap...performance gaines noted from many owners have been minimal

 

[big_ben]

What the hell are you guys talking about?! the T25 is the s***!!!!

 

[AGR]

What the hell are you guys talking about?! the T25 is the s***!!!!

'Morning Ben! Is your opinion a "+" or a "-" toward the T25 Turbo?

....just curious.