So I have a 1995 Civic LX with a stock D15B7 and a 4-speed auto and about 70,000 original miles. I usually let it shift around 3,000 to 3,500 rpm, but sometimes I go up to about 5,000 when I want to have some fun. My question is, will this cause any negative effects on the car? The car has always been properly maintained and the maintenance schedule has always been followed and I use synthetic oil. Also, if any of you have had problems caused by doing this, please let me know.

 

5k rpm is not high lol.

Bounce off the rev limiter. It's there for a reason

IOW, it's not bad to hit 5k.... You won't hurt anything.

 

cause when you rev a d15 out the **** sounds like it gonna pop

 

D series can never die!

They can take a lot of abuse. When I was young and had my crx, it saw redline daily, multiple times a day.

Never once had a hiccup.

I remember the first time I hit fuelcut, that was scary lol.

 

FYI for you.

Does high RPM have negative effects, sure. Is high rpm bad. No.

Being you have presented the question, it would appear you are not aware of the physics involved.

The higher the RPM, the more force all the parts are being subjected to (bearings, rod caps, cylinder walls, piston rings, etc). The higher the force, the more wear that occurs in certain parts. However wear is natural in an engine so is not considered bad.

I could get into detail on that wear and exactly what it's doing but that is not necessary. Just know that the Honda engineers have designed into the engine plenty of safety margin for all ranges of normal engine operation.

Simply, redline of your motor is set where it is set so there is safety margins and bringing the car to redline is not going to normally break the engine. It's when you go past the ranges Honda set that tend to break the motor i.e. turning the RPM up to 8500 on a D15B7 engine (oem rev limit of 6800).

One thing you need to be aware of regarding your D15B7. It has a graphite composite head gasket. This head gasket is known to fail (regardless of rpm). At some point in your engines life, that head gasket is going to need to be replaced, and it is best replaced with the 4 layer MLS leak gasket Honda indicated in the TSB for all non vtec engines from 88-95.

Honda in the USA has discontinued the gasket from what I have heard but you can find it on autopartswarehouse.com. It's made by Ishino and references itself as the special gasket for TSB such and such in the event the head gasket leaked.

 

I know this my d15 saw redline everyday all day too, but how else are you gonna merge into traffic? lol. I was just saying when they get high in the rpms it sounds like a damn time bomb but it never blows atleast mine didn't haha

I remember once I did a oil and filter change didn't realize the old filter gasket was still stuck on there. Started romping on the car take it out gear notice it sounds funny look back and there is all of my new oil. Drove it home (2 miles) put some more oil in and was good