Safe rev for a d15b2

[rudeludenotmeanthough]

A friend of mine has a 90 Civic hatch DX with a d15b2. His car is not equiped with a tach, so we are going to install one. No not a monster tach, just a lil one that get the job done. sorry to disappoint you guys... But anyways, i would like to know where the red line starts on these motors. Thank you.

 

[EGLSHB]

hmm... if i remember correctly ,. the redline on the D15 motors starts shortly after idle...... but realistcally... i wouldn't take it past 5500... maybe 6000.....

 

[rudeludenotmeanthough]

that seems kinda low. But obviously i have no clue or else i wouldnt have posted the question. Any other input?

 

[EGLSHB]

well... we are talking about an older motor... i am sure it will rev higher than that... and i am not sure where the fuel cutoff is, probably 65-6700 RPM,
but the numbers i gave are strictly for "playing it safe"

 

[hcivic.com]

ya i blew my b2 at 8200 rpm and the second one worked up to 7200 with the limiter removed and fuel bumped up. I still have the b2 as a back up in the corner and it ran strong for 7 mounths until i removed it

 

[rudeludenotmeanthough]

so what would you recommend as a safe redline on this motor?

 

[commador]

6500 should be a good redline. My d15 will pull until around there, then it runs out of cam, ha, I need to do a mini-me