# Merry Christmas Me v.Subaru Built Motors **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [December 12, 2007, 8:44am UTC](https://forums.speedlife.net/t/merry-christmas-me-v-subaru-built-motors/40149 "2007-12-12T08:44:00Z")\ **Posts on this page:** 1\ **Showing post:** 26
**Author:** ![Inn-Tune](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/inn-tune/32/7588_2.png) [@Inn-Tune](https://forums.speedlife.net/u/Inn-Tune)\ **Post date:** [December 12, 2007, 12:27pm UTC](https://forums.speedlife.net/t/merry-christmas-me-v-subaru-built-motors/40149/26 "2007-12-12T12:27:56Z")
[quote=“MOBOOST4U”"] So after evaluating all my options I have finally came to my decision as to what will spin my 35r this year (and hopefully the next few, fingers crossed) I really wanted to just build the ej25 that I already have but my long term goal has a 42r or 45r in it so I have to account for the motor I will need for that. This is what that orignal motor I have will go to. Only few decisions I have left is what to do with the head and what to do about labor. Im probably purchasing friday! [/quote] Buddy…no way that engine is taking a 42R or 45R. It would take it at low boost, but there’s no point in switching from a 35R to something that huge if you’re not going to really use it. The stock sleeves and semi closed deck design aren’t up to 35+ psi and that kind of cylinder pressure. Stage 3 is good for the GT35R. I have a customer with a 42R using their stage 5 block that they do feel is up to it. Also, you’ll have full boost from 4500-8000. That’s a 3500 rpm powerband which is really to stay inside on a road course. I only use 5500-7500 on the strip. --- _[View the full topic](https://forums.speedlife.net/t/merry-christmas-me-v-subaru-built-motors/40149)._